How To Install Rafter Insulation: Instructions For Installing Loft Insulation Between Rafters


Instructions For Installing Loft Insulation Between Rafters

Rafters, also known as stick framing, are long, wooden boards that are usually used to create roof frames. Insulating rafters is very important, due to the fact that it minimizes heat loss during the winter and unpleasant or undesirable heat gain when temperatures are high. This stick framing is usually secured or affixed to exterior walls with ceiling joists, filled with insulation, covered with plywood (roof sheathing) before finally finishing with roof shingles. Go through the below mentioned step by step instructions carefully if you are looking to install loft insulation between rafters:
  • Protect Yourself
    First of all, it is important to safeguard yourself by wearing work gloves, a long-sleeved shirt, long pants, nonskid shoes, safety goggles as well as a dust mask.
  • Install Lath Or Furring Strips
    Now, you need to install lath or furring strips in order to keep the board separated or segregated from the roof sheathing. Attach or secure these spacers through the sides of the rafters.
  • Install The Foam Board
    After installing lath or furring strips, you need to cut the foam board into pieces, with the help of a utility knife and a drywall T-square, in order to fit between the rafters. After that, you need to install the foam board.
  • Securely Glue The Foam Board Into Place
    It is important that the board's aluminum or other types of vapor barriers should be positioning toward the attic instead of the roof. Make sure not to use nails, due to the fact that these can penetrate the roof sheathing as well as shingles, which can cause leaks. Instead, you need to use a foam board adhesive, as these are available in caulking tubes for easy application and will securely glue or attach the foam board into place.
  • Fill The Gaps, If There Are Any, Between The Boards
    If there are any gaps betwixt the boards, you need to fill these gaps with the help of spray foam insulation. It is also an excellent idea to seal off gaps, edges as well as seams with the help of foil tape.

Difference Between Ceiling Insulation & Roof Insulation

  • Ceiling insulation generally uses loose-fill or blanket (batt) insulation in the attic, whereas, roof insulation types consist of rigid foam insulation boards, radiant barriers, as well as spray foam, if needed.
  • Attic insulation is more accessible to use as well as inexpensive, however, it may not be as successful or energy-efficient in producing a desired or intended result.

Other Kinds Of Insulation

  • Radiant Barrier Insulation
    Radiant barrier insulation is usually composed of a highly reflective material, such as foil. You can apply this to one or both sides of the cardboard, plastic film or other kind of material as well as air infiltration barrier material. This insulation is generally placed right before the builders install or fix the roof sheathing. However, this can also be done from the inside of the attic. It gets stapled onto the underside of the roof's insulating rafters.
  • Loose-fill Or Batt Insulation
    If you choose loose-fill or batt insulation, both can be made from different insulating materials, such as fiberglass, cellulose and mineral wool. Batts can also be composed of cotton. The different types of rigid foam board consist of molded expanded polystyrene board, extruded expanded polystyrene foam board and polyisocyanurate/polyurethane foam board. All three work, however, the third choice is the most expensive and has the most substantial insulating properties.
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