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It is generally advised to remove existing roof shingles when installing new ones. Particular areas in the attic room can posture major fire and carcinogen. Prior to air securing and shielding an attic, ensure you or your service provider address the following health and wellness and safety and security issues. Inspect the smokeshaft and surrounding framing for indicators of charring, residue deposits, falling apart stonework or mortar, or proof that the chimney cellular lining is wearing away.


Have a smokeshaft specialist repair work, seal and protect it at the very same time. Generally a void exists where a stonework smokeshaft passes via the attic room. To air seal this location, initially set up sheet steel flashing to connect this space and afterwards seal all the joints with a non-combustible sealant (ensure the product is ranked for this application).


An air and vapour obstacle covers the flooring of the attic room area and is sealed to the joists with acoustical sealant. Factory-built metal smokeshafts need to be maintained from speaking to insulation by a minimal 75 mm (3 in.) unless or else defined by maker or regional authorities. Set up a non-flammable radiation guard that preserves a 75-mm (3-in.) air area between the chimney and insulation.

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The top of the radiation guard ought to also be a minimum of 75 mm (3 in.) more than the degree of existing or new insulation to be included. To stop insulation from falling behind the guard, attach a clamp-type tornado collar without sealant on top of the radiation shield, as received Figure 5-4.


A radiation obstacle creates a 75 millimetre or 3-inch air room around the chimney and expands 75 millimetres or 3 inches above the attic insulation, maintaining the range from combustible materials. The top of the obstacle is a storm collar secured, not sealed, to the chimney. Over the ceiling, the air and vapour barrier is covered around the drywall to get in touch with the firestop sealer.


A collar-like ceiling trim plate is attached below the firestop. Standard interior recessed lights are tough to air seal efficiently and can come to be a fire danger if covered with insulation.

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This also uses the opportunity to much better seal and shield the existing cavity. If you discover a substantial amount of pet droppings and vermin in the attic, do not disturb them since they can harbour quickly airborne moulds, bloodsucker eggs and microorganisms that can cause serious illness.


Seal the complying with locations: Around the pipes stack and any type of various other pipelines. For plastic pipes stacks that go up and down due to thermal growth, make use of an adaptable gasket or a polyethylene sleeve sealed to a plywood collar (see Figure 5-6). Around cables or ceiling lights that pass through the attic floor and dividers and outside wall surface top plates (see Figure 5-7 and Figure 5-8).




Structure codes need that air areas in between smokeshafts and flooring or ceiling settings up with which they pass be sealed with a non-combustible fire stop (see Figure 5-3 and Figure 5-4). There is typically a space between the celebration wall (such as the shared wall between units in duplexes, triplexes and row houses) and the edge of the attic room flooring.

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


Attic air flow offers a variety of objectives. It reduces summer heat buildup, prolonging the life of roofing and decreases a/c unit loads. After air sealing, attic room ventilation is your 2nd line of defence versus the water vapour that may have discovered its way right into the attic - Home energy audit. It guarantees a colder, well-vented attic space less prone to the formation of ice dams at the eaves.




You may need to situate roof covering or soffit vents from outdoors if they are not plainly visible from inside the attic. Houses with peaked roofing systems and easily accessible attic rooms are the most convenient to air vent by making use of the proportion of 1 to 300. This proportion describes unhampered air over here vent location to the insulated ceiling area.


Do not utilize electric exhaust fans for attic room air flow as these can attract a lot more air than can be provided via the soffit vents. This will really pull house air into the attic, leading to higher warm loss and wetness buildup. They are also vulnerable to failing, noise production and boosted energy usage.

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The location of vents is as important as their number and type. Commonly, a mix of types and places will function best. The following Components detail the ideal method relying on your attic kind. After you have evaluated the attic and executed any type of remedial work, emphasis first on air and wetness control.


On the other hand, spray foam supplies air sealing and a preliminary layer of excellent quality insulation that can be covered up to the preferred RSI (R) degree (HVAC maintenance). If the attic retrofit is being completed together with interior remodellings, the most convenient approach is to set up a brand-new, single air and vapour barrier on the underside of the ceiling joists


Building codes call for that air areas between smokeshafts and floor or ceiling settings up through which they pass be secured with a non-combustible fire stop (see Number 5-3 and Number 5-4). There is commonly a space in between the celebration wall (such as the common wall surface between systems in duplexes, triplexes and row houses) and the side of the attic room floor.


A hefty polyethylene sheet which is caulked with acoustical sealant and stapled to the ceiling frames the electrical box. An electric wire diverts from the electrical box and down with a hole into an indoor wall. Openings around electric cables are loaded with caulking or foam sealant, and caulking seals voids along the top of the interior walls.

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Attic air flow serves a number of objectives. It decreases summer season warm build-up, prolonging the life of roof and decreases air conditioner loads. After air sealing, attic room air flow is your 2nd line of protection versus the water vapour that might have found its method into the attic. It makes sure a cooler, well-vented attic room room much less vulnerable to the formation of ice dams at the eaves.


You might need to find roof covering or soffit vents from outdoors if they are not plainly visible from inside the attic. Houses with peaked roofs and available attics are the simplest to vent by using the ratio of 1 to 300. This ratio describes unhampered air vent location to the protected ceiling area.


Do not make use of electric exhaust fans for attic room air flow as these can draw more air than can be provided with the soffit vents. This will actually draw residence air into the attic, causing higher heat loss and dampness build-up. They are also vulnerable to failing, noise manufacturing and boosted energy usage.


The following Components information the best approach depending on your attic type. After you have inspected the attic and carried out any remedial work, emphasis initially on air and dampness control.

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On the other hand, spray foam supplies air securing and an initial layer of high quality insulation that can be covered approximately the preferred RSI (R) level. If the attic retrofit is being finished combined with indoor improvements, the easiest method is to install a brand-new, solitary air and vapour obstacle on the bottom of the ceiling joists.