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toly (Price shown excludes VAT)

01708 525 866

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toly (Price shown excludes VAT)

Foam Strip 20mm x 12mm x 100m

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Additional information

Weight : 1.5 kg

Product Description:

Sealant Polyethylene Backer Strip 20mm x 12mm x 100m

Non-absorbent compressible white closed cell polyethene foam backup material. Insert into a joint to control sealant depth & create a backstop. Strip of 100m of 12mm x 12mm square polyethene foam joint filler and backing for sealants and acoustic applications. Compatible with all know types of sealants to control the depth of the sealant in proper relation to joint width. Provides backing against which the sealant is applied, forcing the sealant to the sides of the joint for adhesion.

Choosing the correct size:

Select a backer strip width that is approximately between 15 and 25% larger than the width of the joint to give a firm base. The backer strip can be compressed down into gaps slightly tighter than its width.


  • General Purpose Sealant backing
  • Together with Self-leveling sealant
  • Expansion Joints
  • Irregular joints
  • Metal and pre-cast panels
  • Around perimeters of door and window frames
  • Coping and glazing joints
  • Log Cabins / Homes
  • Draft Proofing & Acoustic Work

Also, we provide the backer foam in rods or rolls in all sizes, please click here for the 20mm backer rod equivalent. Fire protective backer foam is also available here.