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What are the types of Insulation

When you think about Insulation, you first need to decide which kind of Insulation you will need as there are many types of insulation available. There may be following two points:

  • Where you need to apply insulation?

  • What are the recommended R-values for areas you want to insulate?

Insulation NZ

Types Of Insulation:

1. Blanket: batts and rolls

Insulation Materials: Fiberglass, Mineral (rock or slag) wool, Plastic fibers, Natural fibers

Where Applicable: Unfinished walls, including foundation walls, Floors and ceilings

Installation Method: Fitted between studs, joists, and beams.

Advantages: Do-it-yourself, Suited for standard stud and joist spacing that is relatively free from obstructions. Relatively inexpensive.

2. Concrete block insulation and insulating concrete blocks

Insulation Materials: Foam board, to be placed on outside of wall (usually new construction) or inside of wall (existing homes):, Few manufacturers incorporate foam beads or air into the concrete mix to increase R-values

Where Applicable: Unfinished walls, including foundation walls, for new construction or major renovations, Walls (insulating concrete blocks)

Installation Method: This Require specialized skills, Insulating concrete blocks are sometimes stacked without mortar (dry-stacked) and surface bonded.

Advantages: Insulating cores increases wall R-value, Insulating outside of concrete block wall places mass inside conditioned space, which can moderate indoor temperatures, Autoclaved aerated concrete and autoclaved cellular concrete masonry units have 10 times the insulating value of conventional concrete.

3. Foam board or rigid foam

Insulation Materials: Polystyrene, Polyisocyanurate, Polyurethane

Where Applicable: Unfinished walls, including foundation walls, Floors and ceilings, Unvented low-slope roofs

Installation Method: Interior applications: must be covered with 1/2-inch gypsum board or other building-code approved material for fire safety. Exterior applications: must be covered with weatherproof facing.

Advantages: High insulating value for relatively little thickness. Can block thermal short circuits when installed continuously over frames or joists.

4. Insulating concrete forms (ICFs)

Insulation Materials: Foam boards or foam blocks

Where Applicable: Unfinished walls, including foundation walls for new construction

Installation Method: Installed as part of the building structure.

Advantages: Insulation is literally built into the home’s walls, creating high thermal resistance.

5. Loose-fill and blown-in

Insulation Materials: Cellulose, Fiberglass, Mineral (rock or slag) wool

Where Applicable: Enclosed existing wall or open new wall cavities, Unfinished attic floors, Other hard-to-reach places

Installation Method: Blown into place using special equipment, sometimes poured in.

Advantages: Good for adding insulation to existing finished areas, irregularly shaped areas, and around obstructions.

6. Reflective system

Insulation Materials: Foil-faced kraft paper, plastic film, polyethylene bubbles, or cardboard.

Where Applicable: Unfinished walls, ceilings, and floors.

Installation Method: Foils, films, or papers fitted between wood-frame studs, joists, rafters, and beams.

Advantages: Do-it-yourself. Suitable for framing at standard spacing. Bubble-form suitable if framing is irregular or if obstructions are present. Most effective at preventing downward heat flow, effectiveness depends on spacing.

7. Rigid fibrous or fiber insulation

Insulation Materials: Fiberglass, Mineral (rock or slag) wool

Where Applicable: Ducts in unconditioned spaces. Other places requiring insulation that can withstand high temperatures

Installation Method: HVAC contractors fabricate the insulation into ducts either at their shops or at the job sites.

Advantages: Can withstand high temperatures.

8. Sprayed foam and foamed-in-place

Insulation Materials: Cementitious, Phenolic, Polyisocyanurate, Polyurethane

Where Applicable: Enclosed existing wall, Open new wall cavities, Unfinished attic floors.

Installation Method: Applied using small spray containers or in larger quantities as a pressure sprayed (foamed-in-place) product.

Advantages: Good for adding insulation to existing finished areas, irregularly shaped areas, and around obstructions.

9. Structural insulated panels (SIPs)

Insulation Materials: Foam board or liquid foam insulation core, Straw core insulation

Where Applicable: Unfinished walls, ceilings, floors, and roofs for new construction.

Installation Method: Construction workers fit SIPs together to form walls and roof of a house.

Advantages: SIP-built houses provide superior and uniform insulation compared to more traditional construction methods; they also take less time to build.

Now it’s time to hire a professional certified installer.

  • Get written cost estimates from a few contractors for the R-value you require, and don’t be shocked if cited costs for a given R-value installation change by more than a factor of two.

  • Get some information about their air-sealing services and expenses too, on the grounds it’s a smart thought to seal air spills before installing insulation.

Conclusion:

For more about Insulation New Zealand visit http://www.saferinsulation.co.nz

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