22. Can spray foam be sprayed on top of existing batt or blown-in insulation?
Spray foam could be sprayed over fiberglass batts and some compacted blown-in fiberglass but it is not generally recommended as it changes the dew point in the insulation. Flash and batt techniques can be used with caution and attention to detail
20. Is Spray foam eligible for government grants?
Spray foam is eligible for government grants, the grant system works by how much R-value has been added to the existing insulation. The cheapest bang for your buck would be fiberglass insulation because generally that is what is there in the first place
3. What is Roxul?
Roxul is a stone wool batt insulation that is used in walls or ceilings. There are numerous types of Roxul brand amterials on the market. They vary from thermal protection to fire protection as the material will not burn or cary a flame. It has an R-value per inches lower than closed cell spray foam but higher conventional insulation. It has very good sound deadening qualities as well.
16. What is the difference between open celled foam and closed cell foam?
There are several differences between open and closed cell foams. Closed cell foam is more dense than open cell foam and has a higher R-value pr inch. Closed cell is rough 2lb per cubic ft. while open cell is rough .5 lbsper cubic ft. Thats why insulation contractors use the terms 2lb adn half opound when talking about spray foam insulation.
Closed cell foam has a higher cost per board foot and can add to the structural integrity of a building where open cells can not. Open cell foams are soft, similar to the foam that is in souch cushions. Open cell foams are great for sound deadening where closed cell is not. Open cell often also requires a vapour barrier where as closed cell does not.
1. How Does spray foam work?
Spray Foam insulation is a two-part system that trained and certified installers can use to to spray polyeurathane insulation into and onto various substrates to create an air-tight and sealed building
9. How do I fix a cold room above a garage?
Every garage ceiling is different, however, generally speaking, the insulation ad sometimes the vapour barrier is installed in thewrong locations of the joists or not enough attention was given to the exterior ring-joists. Also the mechanical system (ducting) is sometimes running through a cold space and not sending enough heat to the room, or the venting is too far from the furnace. These are all some of the things that should be considered when "fixing" a cold rooom above a garage. Thermal Infared Imaging is used to dected air movement, and Boroscopes for non-invasive testing to try and determine reasons why the floor is cold.
6. When is a vapour barrier required?
A vapour barrier is required by local building codes to be used as a "vapor barrier" that resits diffusion of moisture that moves throughout wall or ceiling assemblies. In North America it is generally a 6 mil/ poleyethelene film that is installed over conventional fiberglass batts in a wood or steel framed assembly. Vapour barriers could also be a spray applied substance as well.
QUESTIONS AND ANSWERS
23. Is there harmful off gases in spray foam?
There is harmful off-gassing when spray foam is applied and shortly thereafter. Generally, approximately 4 hours after applicatioon, the harmful gasses have dissipated. Standard practice is allowing 24 hours before taking occupancy of a building if there was substantial amounts of spray foam applied. Exhaust fans are also used to expel fumes during the application.
13. What substrate will spray foam stick to?
Although spray foam insulation will stick to almost everything , there are some limitations,, such as wet, oily or dirty substrates. The area to be sprayed needs to be dry as well as oil and dirt free.
4. Can Roxul sound proof my walls and ceilings?
Roxul can be used to help soundproofing your walls and ceilings. Sound proofing shoube thought of as a system, there are otehr materials and building techniques that should be utilized for a "sounds" to be effective.
2. What is R-value?
R-value is essentially the measurement of Thermal resistance used in the building and construction industry, Insulation materials are rated with an R-value per inch. Although there are arguements that the state that is an antiquiated way of comparing insulations as they are not all created equal, this si the industry standard and is used widley through North America.
11. Where can spray foam be used?
Spray foam insulation can be used anywhere in the buildign that needs insulation. Spray foam is a very versitile product, and ould be used anywhere conventions fiberglass is used. Spray foam is also great for getting in to harder to reach places that fiberglass is difficult for.
8. How do I properly insulate my crawlspace?
There are several things to cnsider when insulating your crawlspace such as wether the crawlspace is a vented or unvented area. Also, whether the ground is dirt or concrete. Whether the walls are to be insulated, or the floor is to be insulated. There are numerous systems and numerouse types of insulation that could be installed. Contact us for a free insulation inspection and consultation.
10. What areas of my home should be insulated?
The "building envelope"of your home should be insulated. Any exterior surface that comes into contact with the exterior elements. Note- an attached garage is considered an exterior space, so the walls and ceilings seperating the house from the garage should be insulated. also pay attention to any "bump-outs". Dormers or decks could be apart of the building enevelope. Contact us for a free consultation
15. What is the difference between a vented and unvented attic?
The difference is whether or not the attic is "breathing"- If there is ventilation or air movement between the roof sheathing and the insulation. Attics can be vented several different ways, generally there could be venting in through the soffit area or in through gable vents and out through roof vents or ridge caps. An unvented atti8c would have insulation applied directly to the undrside f the roof sheathingwith no air-flow in between.
19. Is spray foam insulation building code approved?
Yes, spray foam is building code approved. Some building inspectors even prefer to see closed cell spray foam in certain arasof the homes instead of conventions fiberglass insulation.These areas include ring-joists, unvented roof assemblies and moisture prone areas like crawlspaces.
25. How long will spray foam last?
Spray foam insulation will last as long as your house. It needs to be installed once and only once. It will never sag or settle and it will add to the structural integrity of your building.
21. What is cellulose insulation?
Cellulose insulation is essentially ground up recycled newspaper that has been treated with a fireproofing product so that it will not burn easily. It is blown into flat attics and injected into hollow wall cavities. Rodents and insects do not burrowing in Cellulose making it a good product to use for rural installations. It is generally a bit more expensive than loose fill fiberglass insulation but it is denser with a higher R-value per inch than fiberglass.
24. Can I rent spray foam equipment and do the project myself?
Spray foam equipment is highly technical and very costly. Applicators are trained and certified. Even if you could rent the equipment, the materials are only supplied to trained professionals. Spray foam is not a do-it-yourself project.
18. What if I dont qualify or don't want to use the rebate program?
Upgrading the insulation leverls in your hme, especially your attic is the cheapest and easiest way to lower your energy bills and save money. The rebate is a good incentive but saving money month after month is the bigges5t reason to get the upgrade done.
5. What advantages does spray foam insulation have over fiberglass batt insulation?
Spray foam insulations advantages are nurmerous over traditional fiberglass insulation. Primarily it is a sprayed in place product that seals all gaps, holes, etc. It will not sag or settle, it has a higher R-value per inch, and gernerally closed cell foams do not require a vapour barrier.
17. Whats grants and/or rebates are available?
There is a currently a rebate program available in BC for up grding existing insulation in your homes. This program is available to homeowners who prequalify by having a third party assement done on their homes. The cost for this inspection is usually $400-$450 depending on location. The rebates vary from $100 to over $1000 depending on teh type of upgrade you are doing.
7. How do I choose an Insulation Contractor?
There are a few things to consider when deciding on an Insulation Contractor. Make sure the contractor is fully licenced and insured. Choose a contractor that is experiences, with an ever evolving building industry, you can't beat experience. Be sure that the installers are fully trained and certified. Choosing a contractor with a multi-vehicle fleet can be of great help if there are equipment breakdowns as another truck or trailer could be re-routed to keep up with your schedual. Cntractors with trained personnel to maintain the equipment technicians is important when it comes to teh spray foam industry as it is a complex system that requires trained personnel to maintain the equipment to ensure proper and timley installation.
12. Is spray foam insulation Eco-friendly?
The new "Eco-foams" are more friendly than older products that were on the market. The spray foam industry is getting greanner every year with improvementsto the recycled and renewable materials that are in the product. Spray foams are very efficient at insulating your home your home, you end up using less energy- That's Eco-Friendly.
14. Will spray foam lose R-value over time?
Spray foam has a slightly higer R-value when it is first applied than it does after it has had time to acclimate. When comparing spray foams, the comparisions should be by the L.T.T.R (Long Term Thermal Resistance). The measurements will be an L.T.T.R R-value per inch. It is generally arounf R-6 per inch for closed cell foams and R3.6 for oepm cell foams.