DIY Builds
DIY Builds
Photo: Klaus Nielsen
Polyisocyanurate Insulation Materials Foamed-in-place applications of polyisocyanurate insulation are usually cheaper than installing foam boards, and can perform better because the liquid foam molds itself to all of the surfaces.
One of the most common and effective means of removing black or green mold from concrete is bleach. Bleach will kill mold down to the root,...
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10 Low-Stress Jobs. Data Scientist. Dietitian. Medical Records Technician. Massage Therapist. Appliance Repairer. Librarian. Diagnostic Medical...
Read More »Polyurethane is a thermoset foam insulation material that contains a low-conductivity gas in its cells. Polyurethane foam insulation is available in closed-cell and open-cell formulas. With closed-cell foam, the high-density cells are closed and filled with a gas that helps the foam expand to fill the spaces around it. Open-cell foam cells are not as dense and are filled with air, which gives the insulation a spongy texture and a lower R-value. Like polyiso foam, the R-value of closed-cell polyurethane insulation can drop over time as some of the low-conductivity gas escapes and air replaces it in a phenomenon known as thermal drift or ageing. Most thermal drift occurs within the first two years after the insulation material is manufactured, after which the R-value remains unchanged unless the foam is damaged. Foil and plastic facings on rigid polyurethane foam panels can help slow down thermal drift. Reflective foil, if installed correctly and facing an open air space, can also act as a radiant barrier. Depending upon the size and orientation of the air space, this can add another R-2 to the overall thermal resistance. Polyurethane insulation is available as a liquid sprayed foam and rigid foam board. It can also be made into laminated insulation panels with a variety of facings. Sprayed or foamed-in-place applications of polyurethane insulation are usually cheaper than installing foam boards, and these applications usually perform better because the liquid foam molds itself to all of the surfaces. All closed-cell polyurethane foam insulation made today is produced with a non-HCFC (hydrochlorofluorocarbon) gas as the foaming agent. Low-density, open-cell polyurethane foams use air as the blowing agent and have an R-value that doesn't change over time. These foams are similar to conventional polyurethane foams but are more flexible. Some low-density varieties use carbon dioxide (CO2) as the foaming agent. Low-density foams are sprayed into open wall cavities and rapidly expand to seal and fill the cavity. Slow expanding foam is also available, which is intended for cavities in existing homes. The liquid foam expands very slowly, reducing the chance of damaging the wall from overexpansion. The foam is water vapor permeable, remains flexible, and is resistant to wicking of moisture. It can provide good air sealing, is fire resistant, and won't sustain a flame. Soy-based, polyurethane liquid spray-foam products are also available. These products can be applied with the same equipment used for petroleum-based polyurethane foam products. Some manufacturers use polyurethane as the insulating material in structural insulated panels (SIPs). Foam board or liquid foam can be used to manufacture a SIP. Liquid foam can be injected between two wood skins under considerable pressure, and, when hardened, the foam produces a strong bond between the foam and the skins. Wall panels made of polyurethane are typically 3.5 inches (89 mm) thick. Ceiling panels are up to 7.5 inches (190 mm) thick. These panels, although more expensive, are more fire and water vapor-diffusion resistant than EPS. They also insulate 30% to 40% better for given thickness.
Top 5 Tips to Prevent Mould in your Shed Ventilate your shed. Make sure everything is dry. Add moisture absorbers or a dehumidifier. Keep...
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Typically most wooden shed floors need and should have some sort of anchoring. If not, they stand a better chance of being moved by heavy winds or...
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See, corrugated cardboard traps air in the flutes and, as a result, provides good insulation from freezing ground. Hence, why you see street vendors in places like New York and Chicago standing on pieces of cardboard.
Last week’s NFL game between the Minnesota Vikings and Seattle Seahawks was the third coldest playoff game on record with wind chills hovering around -20F. The Vikings told fans to bring cardboard to place under their feet within the stadium.
What legal position do I have? You cannot force your neighbour to remove overhanging branches or fallen leaves on your property. However if these...
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It consists of a combination of sawdust and resins that make it inexpensive and easy to cut. Common uses for MDF include kitchen cabinets and...
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Pressure Treated Wooden Battens. This is a quick, easy and inexpensive option for wooden sheds. ... Pressure Treated Wooden Frames. A wooden frame...
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Power tools can also be stored in a shed, provided it's well-insulated and properly ventilated. As sheds don't typically come with insulation, you...
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