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The HeatLockr Kit

HeatLockr Kit

HeatLockr Kit

This full HeatLockr kit includes the Window Insulation Film, Window Sealing Tape, and Radiator Reflect.

When ordering this, you will automatically receive a service where we install your first kit for free!

Price: €95 - €150 (depending on your room dimensions)

What is in the HeatLockr kit?

Window Insulation Film is the solution for heat loss through windows. HAVERKAMP’s Window Insulation Film is a high-quality Low-E film designed to reduce energy transmission (up to ~25%, depending on glazing) and maintain a more stable indoor climate year-round.

Window Insulation Film

How to Install Your Window Insulation Film:

  1. Clean the Glass Thoroughly: Remove all dust/particles (use glass cleaner; if very dirty, use a glass scraper).

  2. Prep the Edges: Remove any edge binding; install under retaining strips where applicable (or seal edges after with suitable silicone if required).

  3. Spray Mounting Liquid: Spray the cleaned glass with mounting liquid (HAVERKAMP specifies using their mounting concentrate + water mix).

  4. Peel Protective Liner: Carefully peel the protective film from the window film.

  5. Wet the Adhesive Side: Spray the adhesive side with mounting liquid to prevent fingerprints and allow repositioning.

  6. Apply to Glass: Place the film onto the wet glass and align.

  7. Squeegee Out Water/Bubbles: Push water out from center to edges until the pane looks even and bubble-free (careful with thin panes).

  8. Enjoy the Comfort: Film is effective as soon as installed; expect improved thermal comfort. 

Tired of freezing student rooms and high heating bills? HeatLockr’s Sealing Window Tape helps you stay warm without breaking your rental rules. Simple, transparent, and effective - just apply, seal, and enjoy cozy comfort all winter.

Window Sealing Tape

How to Install Your Sealing Window Tape:

  1. Clean the Surface:
    Wipe down the window or door frame with a dry cloth. Make sure the surface is clean, smooth and free of dust or grease for best adhesion.

  2. Measure the Length:
    Measure each side of the window or door where the seal will be applied. Cut the sealing tape to the required lengths using scissors. (Include this part ONLY if we didn’t cut it to size already)

  3. Peel the Backing:
    Gently peel off a small section of the adhesive backing to expose the sticky side of the tape.

  4. Apply the Tape:
    Start from one corner and press the tape firmly along the edge of the frame. Continue peeling off the backing while pressing to ensure an even, tight seal.

  5. Seal the Corners:
    For corners, cut the tape at a 45° angle or slightly overlap the ends to prevent gaps where air could leak through.

  6. Check the Fit:
    Close the window or door to ensure it seals tightly but still opens smoothly. Adjust if necessary.

  7. Enjoy the Comfort:
    Notice immediate reduction in cold drafts, noise and dust - creating a warmer, quieter and more energy-efficient space.

  8. Remove or Replace Easily:
    When the season changes, simply peel off the tape. It leaves no residue and can be replaced with a new strip if needed. (It also keeps cold air inside during the summer).

If your radiator is on an outside wall, a chunk of heat can disappear into the wall instead of warming your room. Radiator Reflect is a thin reflective insulation sheet designed to sit behind radiators, reflecting heat back into the room to save heating costs and make the space feel warmer faster.

Radiator Reflect

How to Install Your NOMA Reflex Roll:

  1. Turn heating off & cool down: Safety first! Work when the radiator is cool.

  2. Measure the area behind the radiator: Estimate height/width of the wall section you want to cover.

  3. Cut to size: Cut the roll to fit behind/around brackets and pipes (leave small clearance for airflow).

  4. Position reflective side outward: Face the shiny/reflective side toward the room/radiator.

  5. Attach renter-friendly: Use removable mounting tape/dots (ideal for rentals) or another non-damaging method included in your kit.

  6. Check fit & airflow: Ensure it’s secure and not blocking vents or radiator convection.

  7. Turn heating back on: You should feel the room warm up more efficiently over time.

  8. Remove or replace easily: If mounted with removable fasteners, it can be taken down at the end of the season without marks.

Premium Insulation Film Powered by Haverkamp

The window insulation film included in every HeatLockr kit is supplied by Haverkamp, a German film developer with over 45 years of expertise in advanced coating and glazing technologies.

Founded in 1978 and ISO 9001 certified, Haverkamp develops and manufactures high-performance films used in building and security applications across Europe.

By combining Haverkamp’s industrial-grade Low-E film technology with HeatLockr’s tailored, rental-friendly installation system, we deliver:

  • Reduced heat loss through single-glazed windows

  • Improved indoor comfort

  • Professionally manufactured materials

  • Long-lasting performance

HeatLockr Kit

HeatLockr Kit

This full HeatLockr kit includes the Window Insulation Film, Window Sealing Tape, and Radiator Reflect.

When ordering this, you will automatically receive a service where we install your first kit for free!

Price: €95 - €150 (depending on the size of your room dimensions)