Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Acrylic Roofing

  • Login to see the comments

Acrylic Roofing

  1. 1. 
  2. 2.  Acrylic is a generic name for rigid plastics made from a substance called 'polymethyl methacrylate’  Other popular names include more recognisable brandnames, including Plexiglas, Perspex and Lucite.  This material has the greatest transparency of any material (even more than glass) and will allow UV to pass right through it, meaning that it won’t yellow over time.
  3. 3.  Most people are familiar with at least one acrylic plastic, Plexiglas®  Plexiglas is an all-acrylic material, usually associated with a polymeric, plastic material that is extremely durable, and has excellent weathering properties, and is very resistant to ultraviolet radiation from sunlight and the adverse effects of weathering.
  4. 4.  Although they are commonly confused, polycarbonates (also known under common brand name Lexan) should not be mistaken for acrylics.  Other uses for polycarbonate include CDs and DVDs and laptop shells.  Acrylics and polycarbonates are very similar materials, but polycarbonate will block out UV rays and as such, will yellow with time and sun exposure. It is much less likely to crack though, and is therefore much easier to install.
  5. 5. I. Acrylic panels II. Acrylic Sheets III. Acrylic roofing tiles
  6. 6.  Though it won't provide a great deal of shade, acrylic roofing will block out any rain, hail or other falling materials like leaves and branches from tall nearby trees.  Acrylic's a good option if you want to ensure that you're allowing as much light as possible through into your pergola.
  7. 7.  Conservaion Technology Acrylic Roof System is designed to permanently waterproof most new or existing roofs with positive drainage, including roofs wit h low slopes and complicated flashings.  The system consists of two principal components: a premium elastomeric liquid acrylic coating and a polyester reinforcing fabric.
  8. 8.  Suitable for any climate - remains flexible in arctic cold; will not crack or dry out in desert heat; unaffected by ultraviolet radiation resulting from long-term sun exposure; resistant to zone, acid rain, and most other air pollution.  Environmentally friendly - water-base coatings contain no toxic dispersants or tints; ideal for roofs used for rainwater collection; safety precautions for applicators are same as for water-base house paints.  Bonds to almost anything - suitable substrates include asphalt, wood, metal, concrete, and rigid foam insulation boards.
  9. 9.  Durable in colors - architectural colors such as reds, greens, and grays match traditional metal roofs; white keeps buildings significantly cooler in the summer, saves energy, and minimizes urban heat-island effect.  Affordable - cost for materials is less than $2.00 per square foot delivered; any contractor or homeowner can obtain excellent results without prior experience; repair patches are just painted on.
  10. 10.  Acrylic roof coatings offer excellent durability, UV resistance, and substrate protection from degradation from sunlight.  Low temperature flexibility.- If the roof is in Chicago, and it’s roughly zero in the winter, the roof and any coating must be able to tolerate movement and not be brittle and crack.  If the roof coating product data sheet claims this coating will stretch 300% before it breaks, that’s OK at room temperature. However, what happens at 0oF? Or at 120oF in the summer time? These are key criteria for successful acrylic roof coatings.
  11. 11.  Adhesion. How well does the coating adhere to the roof substrate. These may include aged metal, aged BUR, aged cap sheet, aged EPDM, PVC, Hypalon R? These are important considerations when making a selection among acrylic roof coatings
  12. 12.  The acrylic sheeting is attached to the pergola roof on the battens.  It is best to lay down some noise tape along the battens first; this prevents the sheets from rattling in the wind and creaking in the heat.
  13. 13.  The first sheet is aligned with the outside of the frame, and the rest is installed working across the middle to the other edge.  Special fixings are required for acrylic sheeting to ensure it is cushioned – these have a bolt head on top, a specially shaped rubber washer and a screw bottom which drills into the wood.
  14. 14.  Acrylic coatings are available in four formulations. I. Acrylic ST is our time-tested standard formulation recommended for almost all fabric-reinforced systems. II. Acrylic HS is a high-strength formulation designed for top coating walkable decks and other surfaces where additional abrasion or dirt resistance is desirable, as well as for unreinforced application over spray-applied foams.
  15. 15. III. Acrylic HP is a high-performance formulation optimized for unreinforced coating of asphalt roofs in good condition, and offers an ideal way to apply a reflective elastomeric skin over new modified bitumen or built-up roofs. IV. Acrylic AE is a lowcost emulsion of acrylic, asphalt, and clay used to repair and build up deteriorated asphalt surfaces prior to applying the other more expensive acrylic coatings.
  16. 16. APPLICATION MATRIX: Use the following chart to determine required materials for different roof types. In addition, most roofs will require woven flashing fabric. Call for more assistance with material selection. Acrylic Roof System Application Matrix Roof Type Repairs Primer Base Coats Top Coats wood roof caulk, wood fillers Acrylic ST Acrylic ST Acrylic ST wood deck caulk, wood fillers Acrylic ST Acrylic ST Acrylic HS bare metal caulk, metal fillers Metal Primer Acrylic ST Acrylic ST painted metal caulk, metal fillers Acrylic ST Acrylic ST Acrylic ST concrete roof caulk, concrete fillers Concrete Primer Acrylic ST Acrylic ST concrete deck caulk, concrete fillers Concrete Primer Acrylic ST Acrylic HS old asphalt asphalt compounds Asphalt Primer Acrylic ST Acrylic ST new asphalt none none none Acrylic HP foam boards caulk, spray foam Acrylic ST Acrylic ST Acrylic ST spray foam caulk, spray foam none none Acrylic HS
  17. 17.  Minor damage to acrylic roofs can be quickly repaired by cleaning the problem area and painting a few coats of acrylic.  Since acrylic roofs typically lose one to two mils of thickness each year by weathering, or the equivalent of a full coat every five to ten years, they must be pressure-washed and re-coated every five to ten years to prevent long-term loss of membrane thickness.  Determine the minimum number of gallons required for maintenance by dividing the roof area in square feet by 80.
  18. 18.  1) PREPARATION: Sweep, vacuum, scrub, or pressure wash to clean the surface. Then sand, grind, patch, fill, caulk, and prime as appropriate to create a sound, sealed surface.  2) FLASHING: Attach metal drip-edge if desired. Embed reinforcing fabric between two coats of liquid at roof edges, wall transitions, and penetrations such as pipes and skylights.
  19. 19.  3) BASE COATS AND FABRIC: Embed reinforcing fabric between two coats of liquid on the roof surface, overlapping successive sheets of fabric until the entire roof is covered.  4) TOP COATS: After the base coats are dry, apply a top coat in the finish color. When this is dry, apply additional top coats as needed to achieve the desired membrane thickness.
  20. 20.  Primary structural use-  Compression  Acrylic can be either self-supporting, or, used as a nonstructural finish material applied to a substructure.  Material performance-  Acrylic is generally a dimensionally stable material under normal temperatures, but, it can expand or contract three to eight times more than glass in sudden temperature changes.  As a result, expansion joints are a critical element of panel installations.
  21. 21.  Dimensional and opening restriction  Sheets: 96” x 48” x (0.060” to 1”)  Tubes: 72” x (1/4” to 12” OD) x (1/8” to 12 ¾” ID);  Rods: 72” x up to 12” Diameter & 72” x 3” sq  Can be custom cut  Acoustic property  Corrugated acrylic can be used as an acoustic damper in areas where unrestricted views and low noise levels are both desired.
  22. 22.  Cost analysis  Sheets: $1.50/square foot (minimum)  Tubes & Rods: $0.05+/linear foot (minimum)
  23. 23.  Conservation Technology Acrylic Roof System can be applied over hot-applied asphalts,cold-applied asphalts, asphalt composite sheets, metals, plywood, wood composite sheets, concrete, rigid foam, spray-applied foam, fiberglass, and many other substrates.  The substrate must be firm and mechanically sound with no loose material or trapped water.  Old asphalt roofs with extensive deep fissures and large bubbles should be stripped and the underlying roof deck should bere-sheathed.
  24. 24.  There are limitations to these waterborne elastomeric coatings. These roof coatings can provide some restoration to an aged roof.  However, if the roof is too badly deteriorated or the deck is rotted or badly corroded, coating will not return the roof to a useful service life.  . They are applied at rates 10 times thicker than house paint and it will take longer to dry.
  25. 25.  Durability implies resistance to the effects of UV degradation from the sun.  The sunlight strikes a polymer, such as asphalt, the asphalt absorbs some of the radiation, and the polymer begins to vibrate, and break up into smaller pieces. This is the degradation that is associated with the harmful effects of sunlight.  Acrylic polymers are transparent to ultraviolet radiation which means they do not absorb the sun’s destructive radiation.
  26. 26.  When that same acrylic polymer is formulated into a roof coating and the UV transmission is measured, there is no transmission.  When that same acrylic polymer is formulated into a roof coating and the UV transmission is measured, there is no transmission.  Consider our high performance reinforced, fully- adhered and seamless AcryPly® Commercial R.  You can custom-reinforce your roof restoration for extra toughness under adverse service conditions, and you benefit from long-term warranty options and the added confidence of using qualified professional applicators.
  27. 27.  Superior Protection (Total UV blocking.)  Less Labor & more safe.(, "sustainable technology" materials, not excess labor.)  Cool Roof Solution(Advanced chemistry resistant)  Maximum Flaxibility (Mechanical or Adhesive Attachment)
  28. 28.  Traditional uses  Traditionally acrylic is used for glazing purposes as a substitute for glass because:  acrylic is more flexible and lighter weight than glass.  acrylic can be manipulated on site.  Acrylic is also used in the creation of:  countertops  retail fixtures  furniture  signage  lighting  interior partitions, exterior walls, ceilings, roofs, and floors  solar screens  wind breaks
  29. 29.  GROUP NO – 6  VAIBHAVI BHATT  KRISHNA RATHOD  HARITA SONI  JEEL PARMAR  RIYA MISTRY  VISHVA SHAH

×