3M Ultra S800safety window film

Safety film from 3M

42 micro-layers tear apart instead of cracking through, security that comes from engineering, not just thickness. Holds glass in place through blasts, forced entry and impact while staying near-invisible at 87% VLT.

Ultra S800 is built differently from every other safety film we stock: 42 polyester micro-layers laminated into one 200 micron sheet. A thick single ply resists until it cracks through; the micro-layered stack tears layer by layer instead, absorbing impact energy while the sheet as a whole stays on the glass. Tensile strength is 220 MPa, against 172 for the single-ply SH films, with elongation of 135%.

That construction is why a 200 micron film can be the flagship: it is the same thickness as SH8 and just over half of SH14, yet it is the film 3M's Ultra engineering exists for. At 87% visible light transmission it reads as bare glass, blocks 99% of UV, and rejects the modest 21% of solar energy any clear film does. This is a security product, not a heat one.

It is what we quote for blast mitigation, forced entry and high-value glazing, normally specified with a structural edge sealant anchoring the filmed pane to its frame, so the held-together sheet cannot simply fold out of the opening. The honest limit applies here as everywhere: no window film is bulletproof. Its job is to buy minutes, keep shards off people and keep the opening sealed.

Which glass it suits

Ultra S800 goes on the interior face and reads as clear glass, so shopfronts, offices and homes keep their look. For blast or forced-entry duty it is specified together with a structural edge sealant tying the pane into the frame. The film itself can go on single panes and sealed units alike; the survey confirms the pairing.

Performance at a glance

Specifications

Figures are nominal and provided for comparison. Your specialist confirms the final specification and suitability for your glass on a site survey.