Cures Flexible. Will not Bow.

Siroflex® WINDOW & DOOR FOAM sealant is a single component minimal expanding polyurethane sealant. Siroflex® foam sealant creates a water resistant bond to vinyl, wood and metal frames, making it ideal for filling cracks and voids where air can penetrate. 

Basic Uses

Siroflex® WINDOW & DOOR FOAM creates a water resistant bond to vinyl, wood and metal frames making it ideal for filling cracks and gaps around windows and doors and any type of hole, or voids where air permeation or heat loss may occur.


  • Tack Free in 15 min. Can cut or trim in less than an hour
  • 24 hours for full cure.
  • Eliminates drafts and saves energy with an airtight bond.
  • Minimal expanding foam- won't bow windows or door frames.
  • Closed cell foam does not absorb moisture.
  • Seals up to 4 average sized windows 36" x 60", 3/8"width x 1"depth of gap sealed.
  • Eliminates water and air penetration
  • Adheres to vinyl, metal and wood frames.
  • Can be used to seal any areas where air infiltration or heat loss may occur.
  • Foam elasticity allows for joint movement.


Siroflex® WINDOW & DOOR FOAM is available in 24oz (600ml) cans, 12 cans per case.

Typical Properties

  • Skinning time: 15 minutes@77º F
  • Cut time: 1 hour
  • Cure time: 6-12 hours
  • Specific Gravity: 1.10
  • Paintability: Paintable with latex paints
  • Application Temperature: 40º F - 80º F
  • Service Temperature: -40º F to 200º F
  • Shelf life: 12 months from date of mfg
  • Storage: Store in a dry cool area (40º F to 80º F)


Uncured or Tacky Foam: Use Siroflex® FOAM & GUN CLEANER to clean up foam spills and tools before foam cures. Skin: Allow to wear off in time.


Available through your local Siroflex® Inc. distributor. Call 1-800-359-6398 or email to find your local distributor.

Notice to Purchaser

Siroflex® Inc. warrants its products to conform to Siroflex® Inc. published specifications. The user shall determine the suitability of the product to their particular application. the foregoing warranty is in lieu of all other warranties expressed or implied, including those of the merchantability or fitness for any purpose not expressly set forth herein. Manufacturer’s and seller’s liability for damage hereunder shall not exceed the purchase value of the goods used. IN NO EVENT SHALL MANUFACTURER OR SELLER BE RESPONSIBLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH THE USE OF THIS PRODUCT BY BUYER, BUYER’S USER, OR ANY OTHER PERSON. Notification of claim must be sent in writing to Siroflex® Inc. The notice should contain a statement as to how the product failed to meet our warranty, the proof of purchase and the amount of refund claimed.

First Aid

Eye: Flush with water for 15 minutes. Skin: Wipe off uncured foam with cloth or paper towel and soak in soap and water. Inhalation: Remove to fresh air and contact a physician. Ingestion: give fluids. DO NOT INDUCE VOMITING. Call a physician or Poison Control Center immediately.
Do not take internally. Contains propylene glycol and mineral spirits.