Our Green Attics PDFs

Our Green Attics PDFs

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Specific areas in the attic can pose significant fire and wellness threats. Prior to air securing and protecting an attic room, guarantee you or your service provider address the following wellness and safety and security problems.


Have a smokeshaft professional fixing, seal and insulate it at the same time. Commonly a void exists where a stonework smokeshaft goes through the attic room. To air seal this location, first install sheet metal flashing to link this space and then secure all the joints with a non-combustible sealant (make certain the product is ranked for this application).


An air and vapour barrier covers the flooring of the attic space and is secured to the joists with acoustical sealer.

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The top of the radiation guard must likewise be a minimum of 75 mm (3 in.) more than the degree of existing or new insulation to be added. To stop insulation from falling behind the guard, connect a clamp-type tornado collar without sealer at the top of the radiation shield, as received Number 5-4.


A radiation obstacle creates a 75 millimetre or 3-inch air area around the chimney and extends 75 millimetres or 3 inches above the attic room insulation, keeping the range from flammable products. The top of the barrier is a storm collar clamped, not sealed, to the chimney. Above the ceiling, the air and vapour barrier is wrapped around the drywall to get in touch with the firestop sealant.


A collar-like ceiling trim plate is connected below the firestop. Conventional indoor recessed lights are tough to air seal efficiently and can come to be a fire risk if covered with insulation.

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As an alternative to conventional recessed or pot lights take into consideration light-emitting diode (LED) flush or flat install components for better energy effectiveness. This likewise uses the opportunity to much better seal and shield the existing cavity. Make certain that fixture installment directions are followed. If you discover a significant amount of animal droppings and vermin in the attic room, do not disrupt them because they can harbour conveniently airborne moulds, parasite eggs and microorganisms that can cause serious ailment.


Seal the following locations: Around the pipes pile and any kind of various other pipes. For plastic pipes stacks that move up and down because of thermal growth, make use of a versatile gasket or a polyethylene sleeve secured to a plywood collar (see Figure 5-6). Around cords or ceiling light components that penetrate the attic room flooring and dividers and outside wall top plates (see Figure 5-7 and Number 5-8).




Around the chimney. Building regulations need that air rooms in between chimneys and floor or ceiling assemblies whereby they pass be sealed with a non-combustible fire stop (see Figure 5-3 and Figure 5-4). Along the edge of common walls. There is typically a void in between the party wall surface (such as the common wall surface between units in duplexes, triplexes and row residences) and the edge of the attic flooring.

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A heavy polyethylene sheet which is caulked with acoustical sealer and stapled to the ceiling frames the electrical box. An electrical wire leads away from the electrical box and down through a hole into an interior wall. Holes around electric wires are full of caulking or foam sealant, and caulking seals spaces along the top of the indoor walls.


After air sealing, attic room ventilation is your 2nd line of support against the water vapour that might have discovered its means into the attic room. It guarantees a colder, well-vented attic space much less vulnerable to the development of ice dams at the eaves.




You might need to find roof covering or soffit vents from outside if they are not clearly visible from inside the attic. Residences with peaked roofs and available attics are the simplest to vent by utilizing the proportion of 1 to 300. This proportion refers to unhampered vent location to the shielded ceiling location.


Additionally, do not utilize electric exhaust fans for attic room ventilation as these can draw much more air than can be provided via the soffit vents. This will in fact draw residence air into the attic, causing better heat loss and moisture accumulation. They are also susceptible to failing, noise production and boosted energy usage.

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The adhering to Components information the finest strategy depending on your attic room type. After you have examined the attic and lugged out any type of therapeutic work, emphasis first on air and moisture control.


On the other hand, spray foam provides air sealing and a first layer of high quality insulation that can be covered approximately the preferred RSI (R) level (Solar attic fans). If the attic retrofit is being finished in conjunction with indoor renovations, the most convenient technique is to mount a brand-new, solitary air and vapour barrier on the bottom of the ceiling joists


Structure codes require that air spaces between chimneys and flooring or ceiling assemblies with which they pass be secured with a non-combustible fire quit (see Figure 5-3 and Figure 5-4). There is frequently a gap between the event wall (such as the common wall between units in duplexes, triplexes and row residences) and the edge of the attic room floor.


A heavy polyethylene sheet which is caulked with acoustical sealer and stapled to the ceiling encases the electric box. An electric wire diverts from the electrical box and down via an opening right into an interior wall surface. Openings around electric cords are loaded with caulking or foam sealer, and caulking seals voids along the top of the indoor walls.

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Attic ventilation serves a number of purposes. It minimizes summer season warmth build-up, lengthening the life of roofing and decreases a/c unit tons. After air sealing, attic air flow is your 2nd line of protection versus the water vapour that may have located its means into the attic. It makes certain a chillier, well-vented attic room area much less prone to the formation of ice dams at the eaves.


You might have to situate roofing or soffit vents from outside if they are not plainly visible from inside the attic. Residences with peaked roof coverings and accessible attic rooms are the most convenient to air vent by making use of the proportion of 1 to 300. This ratio describes unblocked air vent area to the protected ceiling location.


Do not utilize electric exhaust fans for attic room ventilation as these can attract much more air than can be supplied with the soffit vents. This will actually draw house air right into the attic, causing higher heat loss and wetness build-up. They are additionally susceptible to failure, sound manufacturing and boosted energy use.


The following Parts information the content best approach depending on your attic type. After you have checked the attic room and lugged out any remedial work, focus first on air and dampness control.

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On the various other hand, spray foam supplies air securing and a first layer of premium quality insulation that can be covered as much as the desired RSI (R) degree. If the attic retrofit is being completed in combination with indoor restorations, the simplest strategy is to install a new, single air and vapour barrier on the bottom of the ceiling joists.

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