Seed Home v2 Module Breakdown: Difference between revisions
(→Roof) |
(→Roof) |
||
| Line 65: | Line 65: | ||
See also [[Roofing Membranes]] | See also [[Roofing Membranes]] | ||
<html> | <html> <iframe src="https://docs.google.com/presentation/d/e/2PACX-1vTSDwJb1HA3Ep18iPoF1Tw5Q5DaUOXUTLT3x-1cvW2EXEZF4-WS6nBYy76svMtla6ERZb3NOxRXTSGc/embed?start=false&loop=false&delayms=3000" frameborder="0" width="480" height="389" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe> </html> | ||
[ | [https://docs.google.com/presentation/d/1jr2enge4F-wzPdX2xwkX0djvuFSm3o2l4Vq0CkZ90dg/edit#slide=id.g5c3be0ce2d_1_28 edit] | ||
=Links= | =Links= | ||
*[[Seed Home v2]] | *[[Seed Home v2]] | ||
Revision as of 21:38, 13 October 2020
Work Doc
Foundation
Floor
Walls
Roof
Parameters for assessing cost and practicality: 1) Materials: EPDM, TPO or PVC 2) Installation method: fully adhered, mechanically fasteners + heat welded (seams only) or mechanically fastened + glued (seams only) 3) Form factor: all of these materials come in a variety of sizes - but none is a perfect fit for our roof size - so we need to pick the one that leads to the least waste (cut ends)
I found two major suppliers that sell directly to the public.
Roofkit (EPDM only, I think): - Product line at menards: 45 mil EPDM, latex adhesive, primer, seam tape. This comes out to around $1.15/sq ft - but that doesn't include the cost of seams (which use primer and seam tape) nor waste due to form factor. - Installation manual - Website - with installation videos and FAQ
WeatherBond (EPDM, TPO and PVC) - Comes in a variety of sizes (for example). Can also be acquired by the foot. - Fastener plates - Installation videos - Loads of technical and how-to details (if you can make sense of them): https://www.weatherbondroofing.com/wp-content/uploads/Thermoplastic_Specification_and_Details.pdf
https://www.weatherbondroofing.com/wp-content/uploads/WB-4342-Product-Reference-Guide_03-25-20.pdf
https://www.weatherbondroofing.com/wp-content/uploads/2018-WBPC-2.0-TPO-PVC.pdf
https://www.weatherbondroofing.com/wp-content/uploads/2018-WBPMA-2.0B-TPO.pdf
Installing mechanically fastened TPO seems relatively straightforward up to a point (you unroll the membrane, fasten the edges to the deck with screws and plates, overlap the next sheet and heat-weld the seam). But on the written instructions they keep talking about "perimeter sheets" - but I can't find out what perimeter sheets are, how many we need, how much they cost nor how to install them (are they glued?). It's like a ghost material :)
They also make a weld-free TPO, but I can't find it for sale online (we may need to contact the manufacturer):
One more thing: Elijah says he doesn't know whether TPO can still be heat-welded after prolonged exposure to UV. So this is a question for the manufacturer - as it would affect if and how we could reuse the membrane.
Mechanically fastened roofing membranes:
- https://youtu.be/tHkaXuxgqjo?t=28
- https://youtu.be/zX8T7h-UDg8?t=92
- https://www.youtube.com/watch?v=Bk03UlnvdOs
- https://www.youtube.com/watch?v=q3IWuCndhh0
See also Roofing Membranes