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Flexible Flashing – Carlisle Elastoform for Door & Window Sills +

If you need to make a custom Window or Door Sill Pan, or flash a Pipe, Wire, or Deck Ledger there is not a better product than Elastoform.  This is one of my favorite product finds of the past few years! I found this in Carlisle’s catalog when I was working on details for a house WRB using CCW 705 Peel & Stick.  The video shows me using it on a porch install but these photo’s below are from my Perfect Wall house I recently completed.  (See these posts here or here to learn more about the Perfect Wall project.) Carlisle makes this product for EPDM roofs and it’s originally intended for pipe penetrations and roof flashing purposes.
It has some similarities to DuPont’s Flexwrap that I’ve used for years to make window sill pans. However, it’s much thicker  (it’s a 90 mil thick product) and it feels “bullet proof”. I love how it retains it’s shape when you flex it into a corner. I first used it on my Perfect Wall house for window sill pans but quickly realized it’s use for flashing: awning bracket, deck brackets, pipes, etc.

Eric Rauser checking out one of the first windows we installed using Elastoform for a sill pan.
Eric Rauser checking out one of the first windows we installed using Elastoform for a sill pan.

Completed window install. Notice we left the head CCW 705 with release paper still on so we could properly lap the window flange.
Completed window install. Notice we left the head CCW 705 with release paper still on so we could properly lap the window flange.

_MG_2944

Sold in 6", 9", or 12" wide rolls. 9" is generally what we use.
Sold in 6″, 9″, or 12″ wide rolls. 9″ is generally what we use.
Gave us extra protection at door sills too. We still used a metal pan for the backdam protection.
Gave us extra protection at door sills too. We still used a metal pan for the backdam protection.

 

Besides the Sill Pan use we found Elastoform really useful for flashing other pentrations:

We mounted the steel awnings on standoffs so we could maintain our WRB at the sheathing and run full insulation behind them.
We mounted the steel awnings on standoffs so we could maintain our WRB at the sheathing and run full insulation behind them.
These metal brackets for the front awnings were much easier to flash with this flexible flashing.
These metal brackets for the front awnings were much easier to flash with this flexible flashing.
Flashed easily
Flashed easily with Elastoform.  The black caulking you see is a termination caulk called “Lap Sealant” meant to terminate the edges.
Another easy flashing job here.
Another easy flashing job here.I found it to be invaluable when I was re-doing a screen porch that had seen rot from a waterproofing failure.
Deck ledgers flashed with Elastoform.
Deck ledgers flashed with Elastoform.
Here's the porch brackets with insulation going behind them.
Here’s the porch brackets with insulation going behind them.
Those standoffs allowed full waterproofing and insulation despite the overhangs. This is a big part of the Perfect Wall concept.
Those standoffs allowed full waterproofing and insulation despite the overhangs. This is a big part of the Perfect Wall concept.
All reading for siding. Rainscreen 1x4 battens installed over foam.
All reading for siding. Rainscreen 1×4 battens installed over foam.
Awnings look great!
Awnings look great!
This awning provides great protection to these doors from both sun and rain.
This awning provides great protection to these doors from both sun and rain.

 

This is a premium priced product as you’ll find this running about $3-4 per LF.  It’s also not generally stocked so you’ll need to special order it ahead of time.  Some products are worth the premium price and this Elastoform by Carlisle is one of those!

Best,

Matt Risinger – Risinger Homes in Austin, TX

Visit my Blog at www.MattRisinger.com

Risinger Homes is a custom builder and whole house remodeling contractor that specializes in Architect driven and fine craftsmanship work. We utilize an in-house carpentry staff and the latest building science research to build dramatically more efficient, healthy and durable homes.

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