🛠️ Seal the deal with the ultimate waterproof wrap—because your foundation deserves the best!
The MFM SubSeal40 is a 40 mil thick, polymer film waterproof house wrap designed for extreme moisture protection and durability. Its high elongation and rubberized asphalt composition allow it to flex with building surfaces without cracking or drying out. Compatible with most construction sealants and compliant with major ASTM and ICC codes, it’s ideal for below-grade foundations and insulation protection during backfill.
| Manufacturer | MFM |
| Item Weight | 9 pounds |
| Product Dimensions | 10 x 10 x 10 inches |
| Is Discontinued By Manufacturer | No |
| Size | 6in. |
| Color | Black |
| Material | Polymer film |
| Shape | Roll |
| Thickness | 4E+1 Millimeters |
| Item Package Quantity | 1 |
| Special Features | Self-seals |
| Batteries Included? | No |
| Batteries Required? | No |
R**Y
Works great
This product was easy to install and use. I made use of it to seal up some cinderblock wall that was below ground. I could not locate the small water leak I had so I used this to cover the wall and it has kept any more water from coming in.
Y**A
Really Works
It was delivered on time and was as described. It is self adhesive and very sticky but if a little dust gets on it, it does not adhere. Overall it is a great product and well worth the money
P**L
Good stuff
Pain to put on but works amazing
P**N
Quality material for preventing moisture penetration
I used this recently with building a wood retaining wall. I affixed the wrap to the base 6x6 timbers that are90+ below ground surface. The only challenge encountered was if there was any slight dust or residue on the timber, the wrap did not affix well, especially at the top of the timbers. Again, the challenge could be I was affixing to pressure treated timbers... unsure if that is the case. Recommendation would be to increase the adhesive for a broader use application. Overall, happy with the purchase.
K**H
Used as waterproofing on brick ledge
This product is pro-level quality for waterproofing concrete at transitions and below grade. Used for a brick ledge to protect the lumber sub-sill/zip sheathing transition, as well as along a rim joist where a concrete patio will be poured. Very strong and durable, but not so self-adhering as to be unmanageable.
S**E
Adheres to all surfaces
Adhered immediately very sticky. Loose material will diminishes adherence.
K**S
Ok
Ok
M**R
Waterproof
I had a small leak on my trucks roof rack, I used this water resistant/water proof tape and that took care of the problem.
Trustpilot
4 days ago
1 day ago
