We’re planning to reside our old home late this summer, tearing off the aluminum siding and old clapboard then siding it with beveled cedar. I would like to get some extra R-value in the process by adding EPS sheet insulation over the existing sheeting, then adding Benjamin Obdyke’s Rain Slicker Plus Typar over that before nailing up the new cedar to 2×2 nailers running horizontally.
My questions are these – 1) any potential problems extending my sidewalls out by 2″? (I’ll be installing new windows FWIW) 2) Isn’t the housewrap supposed to be behind the insulation in a colder climate? I’m right outside Chicago with cold winters and humid, hot summers, but assume we’re considered cold climate.
Any advice you all can offer would be much appreciated.
Replies
Check out http://www.wrcla.org for installation details. That's the Western Red Cedar Lumber Association.
Andy
"Never try to teach a pig to sing. It wastes your time and annoys the pig." Robert A. Heinlein
"Get off your dead #### and on your dying feet." Mom
Thank you Andy. Looks like a wealth of info on that site.
Are you using a vertical siding such as "board and batten"?
Are you going to have a rainscreen drainage air gap?
Are the existing wall cavities full of blown or fiberglass insulation?
The sheathing membrane (tyvek/typar or similar) should go outside the insulation.
(I'll be installing new windows FWIW) Be sure to use at least Low "E", Argon gas filled with "warm edge" spacers. Check prices on triple glazed, double Low "E" with Krypton gas. Windows are the lowest R values in our homes!!!
Edited 6/15/2006 6:49 am ET by experienced
Siding will be installed horizontal, 6" beveled cedar with a 4" exposure, prestained. The Homeslicker product is a 3D mesh that provides the rainscreen and the version I want to use incorporates a Typar membrane on the back of the rainscreen to ease installation.As for insulation in the wall cavities, it caries. I've had to tear out plaster in a few rooms, so they have been insulated from the inside. Those that aren't will get blown in insulation from the outside when I strip down to the sheathing.As for windows, its looking like I will be making them myself. We want all wood, true divided lites to recreate what we already have. I can't stand the vinyl jamb liners on modern double hungs and custom windows are way out of my price range ($2000+ per double hung). No final decisions on that one but I have already built a prototype that requires just a bit of tweaking.Thank you for your input.
Edited 6/15/2006 9:48 am by pino