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It is usually recommended to get rid of existing roof shingles when mounting new ones. Specific areas in the attic room can present serious fire and health and wellness threats. Prior to air sealing and protecting an attic, guarantee you or your contractor address the complying with health and wellness issues. Check the smokeshaft and surrounding framing for indicators of charring, soot down payments, crumbling masonry or mortar, or evidence that the chimney cellular lining is wearing away.


Have a smokeshaft expert repair work, seal and protect it at the same time. Typically a void exists where a masonry smokeshaft passes with the attic. To air seal this location, initially install sheet steel flashing to bridge this space and afterwards secure all the joints with a non-combustible sealant (make sure the product is ranked for this application).


An air and vapour barrier covers the flooring of the attic room area and is sealed to the joists with acoustical sealant. Factory-built steel chimneys must be avoided speaking to insulation by a minimum 75 mm (3 in.) unless otherwise specified by manufacturer or regional authorities. Install a non-flammable radiation shield that preserves a 75-mm (3-in.) air space between the smokeshaft and insulation.

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The top of the radiation guard should also be a minimum of 75 mm (3 in.) greater than the level of existing or brand-new insulation to be included. To stop insulation from dropping behind the guard, attach a clamp-type storm collar without sealant at the top of the radiation shield, as received Number 5-4.


A radiation obstacle creates a 75 millimetre or 3-inch air space around the chimney and extends 75 millimetres or 3 inches over the attic room insulation, keeping the range from flammable materials. The top of the barrier is a tornado collar secured, not secured, to the smokeshaft. Over the ceiling, the air and vapour barrier is wrapped around the drywall to contact the firestop sealer.


A collar-like ceiling trim plate is connected below the firestop. Job securely around electric circuitry (shut off the power). Speak with an electrical specialist if doubtful electrical wiring or corroded electrical connections exist. Basic indoor recessed lights are tough to air seal effectively and can become a fire threat if covered with insulation.

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As a choice to conventional recessed or pot lights consider light-emitting diode (LED) flush or level mount fixtures for much better power efficiency. This likewise offers the chance to much better seal and insulate the existing tooth cavity. Ensure that fixture setup guidelines are complied with. If you discover a substantial quantity of pet droppings and vermin in the attic room, do not disrupt them since they can harbour easily airborne moulds, parasite eggs and bacteria that can create extreme illness.


Seal the following areas: Around the plumbing pile and any other pipes. For plastic plumbing stacks that go up and down due to thermal expansion, make use of a flexible gasket or a polyethylene sleeve sealed to a plywood collar (see Number 5-6). Around cords or ceiling lighting fixtures that pass through the attic room flooring and dividing and outside wall surface leading plates (see Figure 5-7 and Figure 5-8).




Structure codes call for that air areas between smokeshafts and flooring or ceiling settings up through which they pass be secured with a non-combustible fire quit (see Figure 5-3 and Number 5-4). There is often a space between the celebration wall (such as the common wall surface in between units in duplexes, triplexes and row residences) and the side of check these guys out the attic room flooring.

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A hefty polyethylene sheet which is caulked with acoustical sealant and stapled to the ceiling encloses the electric box. An electrical cord diverts from the electric box and down via a hole right into an interior wall. Openings around electrical cords are full of caulking or foam sealer, and caulking seals gaps along the top of the indoor wall surfaces.


Attic air flow serves a number of functions. It lowers summertime warmth build-up, extending the life of roof covering and reduces a/c lots. After air sealing, attic room air flow is your second line of support versus the water vapour that may have located its way into the attic - Home energy audit. It ensures a cooler, well-vented attic room space less vulnerable to the development of ice dams at the eaves.




You may have to situate roof or soffit vents from outdoors if they are not plainly visible from inside the attic room. Residences with actually peaked roofings and easily accessible attics are the easiest to air vent by utilizing the proportion of 1 to 300. This ratio refers to unhampered vent area to the insulated ceiling location.


Do not use electrical exhaust fans for attic air flow as these can draw more air than can be supplied via the soffit vents. This will really pull residence air right into the attic room, causing higher heat loss and dampness build-up. They are likewise vulnerable to failing, noise manufacturing and enhanced energy usage.

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The complying with Components information the best method depending on your attic type. After you have actually evaluated the attic room and carried out any type of restorative job, emphasis initially on air and dampness control.


On the various other hand, spray foam offers air securing and an initial layer of top quality insulation that can be topped as much as the preferred RSI (R) degree (Home energy audit). If the attic room retrofit is being finished together with interior renovations, the simplest method is to set up a new, single air and vapour barrier on the bottom of the ceiling joists


Around the chimney. Building ordinance need that air spaces between smokeshafts and floor or ceiling assemblies where they pass be secured with a non-combustible fire quit (see Figure 5-3 and Number 5-4). Along the edge of shared wall surfaces. There is commonly a gap in between the event wall (such as the shared wall surface between systems in duplexes, triplexes and row houses) and the edge of the attic room floor.


A heavy polyethylene sheet which is caulked with acoustical sealant and stapled to the ceiling frames the electric box. An electrical cable diverts from the electrical box and down with an opening right into an indoor wall. Holes around electric cords are loaded with caulking or foam sealant, and caulking seals spaces along the top of the interior wall surfaces.

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Attic air flow offers a variety of objectives. It reduces summer heat buildup, prolonging the life of roofing and decreases a/c unit tons. After air sealing, attic air flow is your second line of support against the water vapour that may have found its means into the attic room. It makes certain a cooler, well-vented attic room area less susceptible to the formation of ice dams at the eaves.


You might have to locate roof or soffit vents from outdoors if they are not clearly visible from inside the attic room. Houses with peaked roof coverings and obtainable attic rooms are the easiest to air vent by utilizing the ratio of 1 to 300. This proportion refers to unobstructed air vent area to the protected ceiling location.


Additionally, do not utilize electrical exhaust followers for attic air flow as these can draw extra air than can be provided through the soffit vents. This will actually draw home air right into the attic, causing greater warmth loss and wetness buildup. They are likewise vulnerable to failure, sound production and boosted energy use.


The following Parts detail the ideal strategy depending on your attic room type. After you have evaluated the attic room and brought out any type of remedial job, emphasis initially on air and dampness control.

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On the other hand, spray foam uses air sealing and a first layer of high top quality insulation that can be covered as much as the desired RSI (R) degree. If the attic room retrofit is being completed together with interior improvements, the simplest technique is to install a brand-new, single air and vapour obstacle on the bottom of the ceiling joists.