No wonder inside that brick room doesn't feel much different from outside! Even in a house like this that's three bricks thick we're lucky if we're at R-3. “You can put your hand up to an exterior wall in the middle of winter and feel cold if it's just a layer of brick.” Consider this: building codes today call for insulation levels of R-19 (the the R-value refers to a material's thermal resistance) or higher on exterior walls, according to North American Insulation Manufacturers Association. “Exposed brick is really wonderful, but brick is also not a great insulator in and of itself,” Urbanek said. (Along with the rafters, for good measure.) The room now conveniently serves as a walk-in freezer in the winter, as it's absolutely frigid that time of year. I'm among them when we removed damaged plaster from the mudroom in our 1890 home we found beautiful weathered brick, and left every inch of it exposed. There's just something irresistible about that gritty, urban look that has people tearing out drywall and plaster in droves. Of course, if you have full access from the inside, just sprayfoam between the ceiling joists.If there's anything we love more than rafters on display it's bringing brick out from hiding. That way you still have the sleek look of the tails.kinda looks like an "uninsulated" roof, but you have all the insulation you need!!! But think about that for a minute.your rafter tails would have a truelly UGLY layer above them (the thickness of the insulation) that you would then have to finish off with a new facia, etc.Ī better looking approach that we have used on many bungalows (new construction and rehabs) would be to add the insulation above the existing roof (usually XPS sheets) and add "Faux" rafter tails that we usually construct from cedar 2x8's that we add onto the side of the roof to match the insulation height. First, the easy way would be to use SIP's or layers of XPS added on top of the existing roof followed by sheathing and shingles (or metal). If you are looking to retain the "exposed rafter tail look", but you want to add insulation, then you really have two different situations. This option requires a crane and specialized crew, but can potentially go on much faster with fewer seams to detail.īased on your experience, is there any clear advantage you see to either method? SIPS deck is then covered with roofing choice (felt & shingles, whatever). Crew takes care to screw SIPS down to rafters. Over this deck, 4' x 20' slabs of SIPS are craned onto the deck. This option can be done with a crew of carpenters, speciall attention to sealing all the seams in the foam. OSB deck attached to nailers, then covered with roofing choice (felt & shingles, whatever) Gaps between nailers filled with 1.5" foam sheet. Over this, individual 4x8 sheets of 4" foam are placed, with vertical 2x4s on the flat screwed through to the rafters to act as nailers. Over the exposed rafter beams, the exposed deck is placed - say T&G plywood. Using this guy as the hypothetical example, here are the two options laid out: for adding on a thick layer of foam for insulation, is SIPS cheaper than rigid foam sheets? If I had to do the whole thing, it would be MUUUUCH easier to lay a 6" SIP over the whole thing. I only have to do that with a couple small sections of my roof. This assembly gets to about R30 which is an Energy Star roof in my area (it also will have white shingles). Inside the furring rafters I'm putting in foam board air channels for eave to ridge vent air flow, and under that is going to be filled with cellulose. Over that, I'm furring Up with 2x10 boards - they are not structural, other than carring their own weight down to the existing rafters. Over that, I'm putting on a layer of TYPAR. I'm leaving the existing 2圆 rafters and 1圆 cedar deck boards on the roof. The rafters are not exposed in my case, I'm just going over the existing rafters for insulation value. I am redoing my own roof at the moment, and one part I'm doing is similar to what you want to do. SIPS are the quick and easy solution to that - think long and hard about why you WOULDN'T use them.
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