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Stormguard Secondary Glazing Window Insulation Film Review: Keep draughts out and warmth in

Stormguard 11SR0666SQM 6Sq m Secondary Glazing Window Insulation Film
4.7
[Secondary Glazing Effect]  Creates an insulating barrier to reduce heat loss and condensation.
[Reduces Draughts]  Seals gaps to prevent cold draughts and improve indoor comfort.
[Self-Adhesive Tape Included]  Comes with fixing tape for quick, no-drill installation.
[Cut-to-Size Flexibility]  Easily trims to fit any window for a custom seal.
[Model 11SR0666SQM]  Specific product code for easy ordering and replacement reference.
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A home improvement film that creates a secondary glazing effect to reduce draughts and retain heat, STORMGUARD Secondary Glazing Window Insulation Film. Warmer rooms and less condensation make chilly evenings more comfortable and protect window frames. Is the installation simple enough for a DIY weekend and suitable as seasonal insulation?

⚡ At a Glance
  • Insulation Performance: Creates a secondary glazing effect that helps reduce draughts and retain warm air
  • Best for: Homeowners and renters with single-glazed or older windows seeking temporary insulation
  • Not ideal for: Properties needing a permanent double-glazing upgrade or structural window repair

Includes self-adhesive fixing tape and can be cut to size. Designed as a seasonal, removable solution to reduce draughts and condensation.


Reduce draughts and retain heat - With a secondary glazing effect

Creates a secondary glazing effect on existing windows and secures in place using the supplied self-adhesive fixing tape. The film can be applied over the inner pane to improve the barrier against cold air.

Reduced draughts make rooms feel warmer and help keep heat inside during colder months, improving comfort without permanent installation.

Custom fit for awkward windows - With cut-to-size film

Can be trimmed to match window dimensions before fixing, allowing adaptation to non-standard or irregular frames. Cutting to size ensures edges align with the frame.

A tailored fit closes gaps more effectively than one-size solutions, making the film practical for older windows and odd shapes.

Reduce condensation and protect timber - Thanks to improved interior sealing

By limiting cold air inflow and retaining warmer indoor air near the glazing, surface condensation is reduced according to user experience. Included fixing tape holds the film to the frame for consistent coverage.

Lower surface moisture reduces the risk of timber rot and paint damage on window frames, helping preserve window condition over the season.

✨ The 4 Key Reasons for STORMGUARD Secondary Glazing Window Insulation Film
  1. Self-adhesive fixing tape — Included for attaching film directly to window frames, no extra fixings required
  2. Cut-to-size film — Trim to fit awkward windows for a snug, bespoke finish
  3. Reduces condensation — Helps prevent moisture build-up and protects timber from rot
  4. Seasonal insulation — Affordable, temporary solution ideal for colder months and renters
📋 Technical Details at a Glance
  • Category: Home Improvement
  • Brand: STORMGUARD
  • Model number: 11SR0666SQM
  • Coverage area: 6 sq m
  • Fixing method: Self-adhesive fixing tape included
❓ Frequently Asked Questions

Q: Will this reduce draughts in older windows?

A: Yes, users report reduced drafts and noticeably warmer rooms after applying the film, thanks to its secondary glazing effect.

Q: How is the film fixed to the window?

A: Includes self-adhesive fixing tape for attaching the film to window frames without separate glue or screws.

Q: Can the film be trimmed to fit non-standard windows?

A: Yes, the material can be cut to size so it can be tailored to different window dimensions.

🏆 Our Verdict

Suitable for cost-conscious homeowners and renters who want a simple way to improve insulation on single-glazed or older windows. The combination of included self-adhesive tape and cut-to-size film produces a secondary glazing effect that reduces draughts and condensation. Affordable and effective for seasonal use, offering practical protection that can extend the life of window frames.