Remove all metal scrap, drill particles, pop rivet mandrels and excess fasteners from roof to avoid rust stains. Use power saw with metal cutting blades to cut thin sheets, this results in fewer hot metal particles and leaves less resultant burr than a carborundum disc, For roofing – Always place roof screws through the crest.Wickes Metal Sheet Aluminium Checkerplate - 250 x 500mm. (2) £14.70. Wickes Metal White Powder Coated Aluminium Sheet - 250 x 500mm. (0) £16.40. Wickes Perforated Steel Stretched Metal Sheet - 120 x 1.20mm x 1m. (1) Wickes Metal Sheet Aluminium Checkerplate - 200mm x 1m. 9ft Corrugated Steel Roof Sheet. In stock ... 9ft Corrugated Steel Roofing Sheet. Our Sheets have been hot dipped zinc coated type H/1, with aminimum of 350 ...HP Roofing manufactures and supplies premium quality sheets for a better roofing solution for over 50 years in Dublin and maintaining the standards to date. Being one of the top metal roofing sheets suppliers in Ireland, our roofing materials has taken a step ahead to offer the utmost roofings. Get Instant Quote Roof Cost Calculator.Independently tested to current CE EN 14782 requirements and available in a variety of colours, these 13/3 corrugated profile sheets can be used to over clad an ...Metal roof sheets are usually made from steel or zinc. It is available in a wide array of colours and styles. They are able to withstand high temperatures and is suitable for all weather conditions. They are mostly used in industrial and commercial buildings but the new profiles in metal roofing are making it a good option for residential applications as well. …This 31-Gauge corrugated galvanized steel panel is a thin utility use panel that's durable for roofing and siding and is also recommended for DIY projects, privacy fencing, planters and garden sheds. Other uses include: back splashes, ceilings, wainscoting and craft projects. ... galvanized sheet metal. corrugated metal. corrugated metal roofing. Explore More on …DECRA Metal Roofing is the #1 stone-coated steel manufacturer for residential and commercial roofing backed by a lifetime warranty to guarantee protection. ... DECRA’s proprietary stone-coating process involves adhering natural stone granules to the top of base steel sheets to provide a wide range of styles, ...Made from high grade steel, the roof sheet is encased in acrylic and bonded with stone chippings. This creates a strong, lightweight roofing sheet designed to withstand inclement weather. 1140mm length. 860mm width. 0.45mm thick. Lightweight. Quick and easy to install. No need to cut, designed to overlap. Minimum pitch 10 degrees.Metal roofs in Australia tend to be installed in large, corrugated sheets or panels rather than using smaller tiles (although metal roofing tiles are available). These metal sheets are available from different suppliers who produce metal roofing sheets in a range of different corrugation or pattern styles (or 'profiles'). ... Metal sheeting is a relatively lightweight …Made from high grade steel, the roof sheet is encased in acrylic and bonded with stone chippings. This creates a strong, lightweight roofing sheet designed to withstand inclement weather. 1140mm length. 860mm width. 0.45mm thick. Lightweight. Quick and easy to install. No need to cut, designed to overlap. Minimum pitch 10 degrees.( 723) Model# 13513 8 ft. Corrugated Galvanized Steel 31-Gauge Roof Panel Compare ( 364) Model# 4736008000 144 in. Galvanized Metal Roof Panel Compare ( 132) Model# 4736011001 Amerimax Home Products 3 ft. Galvanized Steel Corrugated Project Panel (3-Pack) Compare Model# WM-SGM150 WOREMOR 4.92 ft. W x 1 ft. L WM-SGM150 EMF Shielding Fabric Compare A unique corrugated metal roofing sheet option, the 7/8" Corrugated panel is also available in radiused options. We carry a Traditional 3/4" Corrugated Roof Panels that comes with an anti-siphon groove to help create a moisture barrier and prevent leaks. These corrugated metal roofing sheets are available both in a premium selection of metal ...Metal roofing sheets possess high insulating capabilities and can be used in the construction of backyards, garden buildings, garages, household cladding and industrial roofs. Maxroof Enterprises Kukatpally, Hyderabad Ground, Shop No - G- 5, Sai Baba Colony, Kukatpally, Kukatpally, Hyderabad - 500072, Dist. Hyderabad, TelanganaMetal roofing sheets are also a usual option in construction, with aluminum being one of the most common metal roofing materials used. Aluminum, like other types of metal roofing sheets, has greater resistance to weather and even fire. It’s also a good option for those looking for longevity in their roofs because of its anti-corrosive properties.Metal Roofing Sheets. Corrugated metal roofing sheets combine high-quality steel with a corrugated design to provide incredible strength. This makes them ideal for both …Corrugated roofing sheet made from bitumen is waterproof. It is long-lasting and highly durable. 2. Sheet Metal. Sheet metal roofing sheets are similar to the ...The Metal Roof Company supplies standing seam metal roof materials including zinc, steel and copper roofing.We also supply rainwater goods, including lindab guttering and downpipes which are available for next day delivery. Our flagship product is GreenCoat PLX Pro BT, a high-grade steel used for standing seam roof cladding and often used as an …According to Gutter Supply, a J-channel is a trim that holds the soffit panel in its rightful place. Riverside Sheet Metal mentions that J-channel is designed for roofing applicati...Learn about the advantages, colours and cost of corrugated metal roofing sheets, a low-cost alternative to standing seam zinc or copper roofing. The Metal Roof Company offers …144 in. Galvanized Metal Roof Panel. Add to Cart. Compare. More Options Available $ 100. 67 (41) Model# 987611. ... metal roof panels. galvanized sheet metal ... Metrotile Aquapan Metal Roofing Sheet – 890mm x 1123mm – Grey. £ 28.36 £ 22.68 Inc VAT. Add to basket. Get it before Friday, 23 February order within. Product Description. Additional Information. Delivery Information.Remove all metal scrap, drill particles, pop rivet mandrels and excess fasteners from roof to avoid rust stains. Use power saw with metal cutting blades to cut thin sheets, this results in fewer hot metal particles and leaves less resultant burr than a carborundum disc, For roofing – Always place roof screws through the crest.Find a variety of metal roof sheets and cladding from leading brands at Roofing Superstore. Choose from corrugated, box, PVC or polyester profiles and colours to suit …41/1000 Tile Form 0.6 Thick Mica Coated Roof Sheet Black. From £44.95 (incl. VAT) Choose options. Corrugated 13/3 Profile PVC Plastisol Coated 0.7mm Metal Roof Sheet Anthracite. From £34.76 (incl. VAT) Choose options. 32/1000 Box Profile Polyester Paint Coated 0.7mm Metal Roof Sheet Juniper Green.Home Resources Building Type Residential Roof Products Why Choose Metal Roofs for Your Home? More residential homeowners are turning to metal for their long-term …Plastic putty knife. Metal-roofing base coat. 1-inch galvanized-steel screws. One 1/2-inch aluminum screw nails. A cordless drill. You should have all your tools in a single area to save time. To fix your roof effectively, you should cover the steps below carefully to find and fix a leak in a metal roof.Jun 22, 2022 · Fascia – The trim right below the roof that runs the perimeter of a structure to help keep water from running into the structure. Flashing – Sheet metal that is used to seal different portions of the roof, i.e. chimneys, valleys, etc., and provide extra weather-tightness. The most economical form of metal roofing, exposed fastener roofing, consists of overlapping panels that are fastened directly to the roof deck or framing through the face of the metal. They are called “exposed” because the fastener head remains visible once installed. However, fastener heads are painted the same color as the roofing panels ... Metrotile Aquapan Metal Roofing Sheet – 890mm x 1123mm – Grey. £ 28.36 £ 22.68 Inc VAT. Add to basket. Get it before Friday, 23 February order within. Product Description. Additional Information. Delivery Information.Queensland Sheet Metal supplies a wide range of metal roofing supplies and roofing sheets in Brisbane. Explore our range online or talk to our experts.HP Roofing manufactures and supplies premium quality sheets for a better roofing solution for over 50 years in Dublin and maintaining the standards to date. Being one of the top metal roofing sheets suppliers in Ireland, our roofing materials has taken a step ahead to offer the utmost roofings. Get Instant Quote Roof Cost Calculator.Learn about the advantages, colours and cost of corrugated metal roofing sheets, a low-cost alternative to standing seam zinc or copper roofing. The Metal Roof Company offers …A unique corrugated metal roofing sheet option, the 7/8" Corrugated panel is also available in radiused options. We carry a Traditional 3/4" Corrugated Roof Panels that comes with an anti-siphon groove to help create a moisture barrier and prevent leaks. These corrugated metal roofing sheets are available both in a premium selection of metal ... Specialties: Innovative Commercial Roofing Solutions. Founded on the principles of quality, honesty, and trust, Academy Roofing & Sheet Metal Co began by working on various …Improper contact makes the roof vulnerable to water leakages. Don’t leave metal articles on the roof Don’t throw bird feed on the sheet, bird dropping can damage the colour of the sheet. Don’t use the acetic acid based sealants which liberate aggressive by products during curing which is detrimental to steel sheets.Let us know if we can help in any way 📞 1300 886 944 or 📧 [email protected]. COLORBOND® ROOFING CORRUGATED IRON SHEETS .42 BMT. $16.90 per lineal metre. ZINCALUME® ROOFING CORRUGATED IRON SHEETS .42 BMT. $15.20 per lineal metre. .48 BMT COLORBOND® ROOFING CORRUGATED IRON SHEETS. $19.70 per …LCP Building Products Pte Ltd. Is a customer focused, leading manufacturer and distributor of metal building products including roofing, cladding, structural and a range of architectural designer profiles and panels in ferrous and non – ferrous. Our impressive project portfolio extends across Asia, Middle East, Africa and Europe.Corrugated Color Coated Roofing Sheet ₹ 330/ Square Meter. Get Quote. Galvanized Iron Color Coated Crimped Ridge Sheets, For Industrial,... ₹ 560/ Piece. Get Quote. Aluminium jsw roofing sheets, grade: az150. Color coated jsw metal profile roofing sheet. White,orange polycarbonate sheet roofing service, 4-5 mm.Global Roofing Solutions is a leading metal roofing supplier in the Southern African Region with a proud footprint of 11 branches across South Africa, Botswana and Namibia. We work with Developers, Architects, Quantity Surveyors, Engineers and Contractors. ... CONCEALED FIX SHEETING. KLIP-TITE. ZIP-TEK 420. ZIP-TEK 440. KLIP-LOK 700. …Browse our clearance section for quality roof & wall sheets, purlins, accessories & more at cost-friendly prices. Visit Rhino Steel Cladding now.Metal roof panels are also lightweight and easy to install. Metal roof colors vary by material, which ranges from steel and aluminum to copper and zinc. A popular option is corrugated roof panels, which consist of interlocking metal sheets that form repeated waves or ridges. Other roof panel profiles include ribbed or standing seam. Product Description. Designed for use on warehouses, barns, stables, and various other structures; our polyester coated box profile sheets offer a great lifespan of up to 20 years. Being a 32/1000 box profile sheet, it features 6 profiles with each having a pitch of 200mm and depth of 32mm. Although this sheet is available in bespoke lengths ...Galvanised finished. Corrugated 13/3 profile sheet with 18mm profile height and 76mm pitch. 990mm width when lapped. Range of lengths available. 4.78kg/m² weight. Lightweight structure. Easy and quick application. Cost-effective. For horizontal and vertical wall or roof applications.Rooftech Manufacturers and Suppliers Co is a world-class, proudly Namibian-owned manufacturer of IBR and Corrugated iron sheets, lip channels, roofing nails, and paint. We have a variety of products that we supply to our commercial and individual clients. We have sufficient inventory, support customization, and complete varieties and ...8/3 Corrugated Profile 0.5 24g Galavnised Metal Roof Sheet In-stock. Earliest delivery: Fri Feb 16 2024. From £18.30 £164.70. Do you need a custom length? Enquire today and we'll give you the best price online! Flat 0.7 1220x3000mm Polyester Metal Sheet in Juniper Green In-stock.The most economical form of metal roofing, exposed fastener roofing, consists of overlapping panels that are fastened directly to the roof deck or framing through the face of the metal. They are called “exposed” because the fastener head remains visible once installed. However, fastener heads are painted the same color as the roofing panels ... Metal roof panels are also lightweight and easy to install. Metal roof colors vary by material, which ranges from steel and aluminum to copper and zinc. A popular option is corrugated roof panels, which consist of interlocking metal sheets that form repeated waves or ridges. Other roof panel profiles include ribbed or standing seam. Learn about the advantages, options and applications of metal roofing panels from McElroy Metal, a leading manufacturer of metal roofing products. Explore different profiles, coatings, substrates and colors for …In contrast, metal roofing panels rarely end up in landfills. When metal panels eventually require replacement, they are 100% recyclable. Additionally, metal panels make a great host for solar energy systems, given their long life expectancy. If you’re concerned about the environment, metal roofing is the product to beat. A: Metal roof panels can range from around $22 for a small, corrugated economy panel to around $70 for a larger roof panel coated with aluminum and zinc alloys for superior corrosion resistance. Panel material, size and color are all factors in the cost of metal roofing. 41/1000 Tile Form 0.6 Thick Mica Coated Roof Sheet Black. From £44.95 (incl. VAT) Choose options. Corrugated 13/3 Profile PVC Plastisol Coated 0.7mm Metal Roof Sheet Anthracite. From £34.76 (incl. VAT) Choose options. 32/1000 Box Profile Polyester Paint Coated 0.7mm Metal Roof Sheet Juniper Green.Simply fill in the measurements and choose from the multiple choice options to guide you through each stage of our metal roof calculator. Then, if you’re happy with the order summary, either add to basket and complete your order, or email the quotation to yourself to return to later. You can call us on 01837 659901 or email us at a info ...Explore High-Quality Metal Roofing Options from Leading Australian Brands. Achieve superior quality with our selection of metal roofing and walling sheets sourced from …As of March 2021, you can most likely expect to pay between $8.50 – $16.00 per square foot of metal roofing including installation, or $850 – $1,600 per square – in roofing terms, a “square” or sheet refers to 100 square feet of roof or a roll that is designed to cover 100 square feet of roof. So, you can calculate the cost of your ...Improper contact makes the roof vulnerable to water leakages. Don’t leave metal articles on the roof Don’t throw bird feed on the sheet, bird dropping can damage the colour of the sheet. Don’t use the acetic acid based sealants which liberate aggressive by products during curing which is detrimental to steel sheets.To calculate a flat-pattern sheet metal layout, obtain the Bend Allowance with the following formula: Angle multiplied by Pi divided by 180 multiplied by the sum of the Radius and ...LCP Building Products Pte Ltd. Is a customer focused, leading manufacturer and distributor of metal building products including roofing, cladding, structural and a range of architectural designer profiles and panels in ferrous and non – ferrous. Our impressive project portfolio extends across Asia, Middle East, Africa and Europe.Build with the Best. As an industry leading manufacturer of metal roofing, metal siding and substructural components, McElroy’s products are specified and installed on projects ranging from single family homes to multi-million dollar commercial projects. McElroy Metal's extensive product line paired with our contractor network makes us the ... TRIMDEK Roof and Walling Sheets are suitable for use on a roof pitch of 2° or greater. The cover width is 762mm, and the actual sheet width is 820mm. The standard thickness of BlueScope Lysaght Steel sheets is .42 BMT. A thicker .48 BMT sheet is also available HERE. Sheet tolerance for length is + 0mm, – 15mm; width is + 4mm, – 4mm.They come in colors ranging from strawberry red, graphite grey, pearl white and midnight blue to name just a few. But that's not all. These sheets also have a ...Besides grass or solar panels-covered roof, steel roofing sheets are one of the top eco-friendly choices. Some of the reasons are that it is highly recyclable and energy-efficient. Metal roofs reflect the UV and infrared light rays that contribute to roof surface radiant heat, which can result in a 10-25% reduction in cooling costs.At Combined Metal Industries, our range of sheet metal roofing supplies and walling products are manufactured using the finest metal roofing materials available, including the patented COLORBOND® corrugated roof sheeting system. We’re a market leader in metal roofing supply and manufacturing in Perth, and with our dedicated workshops we have …Metal roofing is an excellent choice for any home in Ireland due to its durability, efficiency, and low maintenance costs. Metal roofs typically cost between €7,000 and €15,000 when installed on a standard 1,000-square-foot home. If you are considering metal roofing for your home, contact HP Roofing today for a free estimate.Made from high grade steel, the roof sheet is encased in acrylic and bonded with stone chippings. This creates a strong, lightweight roofing sheet designed to withstand inclement weather. 1140mm length. 860mm width. 0.45mm thick. Lightweight. Quick and easy to install. No need to cut, designed to overlap. Minimum pitch 10 degrees.What types of Metal Roofing panels are there? We carry metal roof panels in ribbed and corrugated varieties. They each have pros and cons. Corrugated panels are less …Insulated Metal Roof Panels Insulated metal roof panels provide a high level of thermal R-value, which leads to energy savings for your steel building. Our CFR-IMP insulated standing seam roof panels are an all-in-one, cost-effective roofing solution.They provide an unsurpassed weathertight seal and service life, making them ideal for virtually ... Robot's 'Rolex' is custom length, high tensile steel corrugated roofing and wall cladding. Manufactured from colour, zinc or gal for long life. Cut to size ...Items 1 - 20 of 21 ... We stock an extensive range of profile steel roof sheets including cladding sheets & more! 3 - 5 day delivery available when ordering ...We only use the best quality of steel , so you can be assured of quality products but at extremely competitive prices. We will deliver your roofing sheets to any location in the UK , please give us a call befor any order to receive the quote for delivery: 01283363146 , 07477582231. All materials are delivered within 2 – 5 working days from ...To calculate a flat-pattern sheet metal layout, obtain the Bend Allowance with the following formula: Angle multiplied by Pi divided by 180 multiplied by the sum of the Radius and ...Find a variety of metal roof sheets and cladding from leading brands at Roofing Superstore. Choose from corrugated, box, PVC or polyester profiles and colours to suit …Let us know if we can help in any way 📞 1300 886 944 or 📧 [email protected]. COLORBOND® ROOFING CORRUGATED IRON SHEETS .42 BMT. $16.90 per lineal metre. ZINCALUME® ROOFING CORRUGATED IRON SHEETS .42 BMT. $15.20 per lineal metre. .48 BMT COLORBOND® ROOFING CORRUGATED IRON SHEETS. $19.70 per …( 723) Model# 13513 8 ft. Corrugated Galvanized Steel 31-Gauge Roof Panel Compare ( 364) Model# 4736008000 144 in. Galvanized Metal Roof Panel Compare ( 132) Model# 4736011001 Amerimax Home Products 3 ft. Galvanized Steel Corrugated Project Panel (3-Pack) Compare Model# WM-SGM150 WOREMOR 4.92 ft. W x 1 ft. L WM-SGM150 EMF Shielding Fabric Compare At Combined Metal Industries, our range of sheet metal roofing supplies and walling products are manufactured using the finest metal roofing materials available, including the patented COLORBOND® corrugated roof sheeting system. We’re a market leader in metal roofing supply and manufacturing in Perth, and with our dedicated workshops we have …Roofing Sheets. We offer a full comprehensive range of metal roofing sheets in a variety of profiles. Profiles include corrugated, box profile and tile form sheets in a choice of colours. Corrugated, box profile and flat …LYSAGHT® offers a range of corrugated color coated roofing sheets, profile sheets & structural accessories for industrial, infrastructure and commercial buildings. ... Base Metal Thickness 0.60 mm/ 0.72 mm Min. Roof Slope 1.2 degree Steel ZINCALUME ® steel, COLORBOND® XRW steel *Standard offering includes COLORBOND® XRW steel but …When it comes to roofing, cost is often a major consideration for homeowners and contractors alike. The price of roofing sheets can vary greatly depending on factors such as materi...Painted Metal Flat Sheets. We have over 100 colors to choose from in a variety of coil coatings. Standard Sizes: 48" X 120". Custom Sizes Are Available Upon Request. PVDF - Standard Colors. PVDF - Matte Colors. SMP Paint Finish.Metal Roof Panels · Union Corrugating. 3.17-ft x 12-ft Ribbed Charcoal Gray Metal Roof Panel · Union Corrugating. 3.17-ft Ribbed Steel Roof Panel · Union ...Metal roof panels are also lightweight and easy to install. Metal roof colors vary by material, which ranges from steel and aluminum to copper and zinc. A popular option is corrugated roof panels, which consist of interlocking metal sheets that form repeated waves or ridges. Other roof panel profiles include ribbed or standing seam.6. Install Metal Roofing Panels. Start installing metal roofing by overlapping the edging by 1/2 to 3/4 of an inch and make sure it’s square to the roof line. Remember to lay the metal roofing ...
Wickes Metal Sheet Aluminium Checkerplate - 250 x 500mm. (2) £14.70. Wickes Metal White Powder Coated Aluminium Sheet - 250 x 500mm. (0) £16.40. Wickes Perforated Steel Stretched Metal Sheet - 120 x 1.20mm x 1m. (1) Wickes Metal Sheet Aluminium Checkerplate - 200mm x 1m. . Rent a girlfriend tv show
A: Metal roof panels can range from around $22 for a small, corrugated economy panel to around $70 for a larger roof panel coated with aluminum and zinc alloys for superior …Improper contact makes the roof vulnerable to water leakages. Don’t leave metal articles on the roof Don’t throw bird feed on the sheet, bird dropping can damage the colour of the sheet. Don’t use the acetic acid based sealants which liberate aggressive by products during curing which is detrimental to steel sheets.When it comes to choosing the right roof for your home or commercial building, there are many factors to consider. One important aspect to take into account is the color of your ro...When it’s time for a new roof, many homeowners are choosing metal roofing materials over traditional asphalt shingles. Find out their benefits and learn what …It is suitable for a wide range of building designs and is well suited to a variety of commercial and industrial applications. ZINCALUME® ROOFING CORRUGATED IRON SHEETS .42 BMT. $15.20 per lineal metre. .48 BMT ZINCALUME® ROOFING CORRUGATED IRON SHEETS. $19.40 per lineal metre. ZINCALUME® ROOFING TRIMDEK® SHEETS .42 …Westman Steel T-Rib/936 Small Tab Foam Closure Strip (10-Pack) Model # 556318HD SKU # 1000149525. Not Available for Delivery. Not Sold in Stores. Compare. (2) 1. 2. Shop our selection of Roof Panels in the section of Roofing in the Building Materials Department at The Home Depot Canada.Explore High-Quality Metal Roofing Options from Leading Australian Brands. Achieve superior quality with our selection of metal roofing and walling sheets sourced from …Metal roof sheets come in various sizes and profiles. The standard metal roof sheet sizes are 1.8m, 2.4m and 3.6m in length, and 762mm and 840mm in width. The profile refers to the shape and design of the sheet, such as corrugated, ribbed or standing seam. The profile you choose will depend on the aesthetic and functional requirements of …Explore High-Quality Metal Roofing Options from Leading Australian Brands. Achieve superior quality with our selection of metal roofing and walling sheets sourced from …Accord Steel Cladding Ltd is a supplier of steel roof sheets and other building materials for cladding and roofing in the UK. Find out more about their range of products, such as …Browse our clearance section for quality roof & wall sheets, purlins, accessories & more at cost-friendly prices. Visit Rhino Steel Cladding now.12x Grey Cladding Galvanized Roof Sheets Metal Profile Corrugated Roofing Sheet.Presenting JSW Everglow colour-coated sheets. These premium quality sheets are not only colourful from the outside, but equally vibrant from the inside. They come in colors ranging from strawberry red, graphite grey, pearl white and midnight blue to name just a few. But that’s not all. These sheets also have a superior galvalume coating and ...Insulated Metal Roof Panels Insulated metal roof panels provide a high level of thermal R-value, which leads to energy savings for your steel building. Our CFR-IMP insulated standing seam roof panels are an all-in-one, cost-effective roofing solution.They provide an unsurpassed weathertight seal and service life, making them ideal for virtually ... Stone-Coated Steel Roof Tiles. Stone-Coated steel roofing products are available in a wide variety of styles and profiles including tiles, slates, shakes, and shingles. Material costs for stone-coated steel shingles and tiles range from $3.50 to $5.50 per square foot or $350.00 to $550.00 per square including trim.A: Metal roof panels can range from around $22 for a small, corrugated economy panel to around $70 for a larger roof panel coated with aluminum and zinc alloys for superior corrosion resistance. Panel material, size and color are all factors in the cost of metal roofing. Remove all metal scrap, drill particles, pop rivet mandrels and excess fasteners from roof to avoid rust stains. Use power saw with metal cutting blades to cut thin sheets, this results in fewer hot metal particles and leaves less resultant burr than a carborundum disc, For roofing – Always place roof screws through the crest.Metal roof. A metal roof is a roofing system featuring metal pieces or tiles exhibiting corrosion resistance, impermeability to water, and long life. It is a component of the building envelope. The metal pieces may be a covering on a structural, non-waterproof roof, or they could be self-supporting sheets..