Garage Insul8 Installation Guide
One Afternoon Away From a Garage That Finally Feels Right
This is your complete, official installation guide for the Garage Insul8 System, the same dual-core foam panels, window film, and door seals that block extreme heat and cold and stop drafts before they start. Every step below matches the printed manuals included in your kit, so there's no guesswork. Most homeowners finish the entire kit in under 90 minutes, no contractor needed.
BEEST FullStop™ Garage Insul8™ Insulation Kit
Dual-core foam panels that block summer heat and winter cold, installs in under 90 minutes, no tools or contractor needed.
Garage Door Insulation Panels
The core dual-core foam panels that install directly onto your garage door.
Prep the Door Surface & Panels
Adhesive sticks best to a clean surface.
- Brush or wipe off loose dirt, spider webs, and debris from the door.
- Use isopropyl alcohol and a clean rag to thoroughly clean the metal surfaces where the tape will stick.
- Wipe the edges of each panel with isopropyl alcohol where the tape will bond.
- Dry everything completely, no moisture should remain before taping.
Apply the Adhesive Tape
The tape creates a secure mounting surface for each panel.
- Starting at the top panel, apply tape along the outer edges of the door panel frame, horizontally along the top/bottom and vertically along the sides.
- Use the included squeegee to firmly press the tape and maximize adhesion.
- Give each panel its own adhesive border.
Peel the Tape Backing
This exposes the sticky side where the panel will attach, take your time here, it's the trickiest part.
- Use a utility knife to carefully lift a corner of the yellow backing film.
- Peel slowly to avoid ripping the backing.
Install the First Panel
- Position the panel with the aluminum side facing the door (reflects heat/cold) and the vinyl side facing inward.
- Align it centered horizontally, then press from the center outward.
- Trim around rollers, locks, braces, or handles with a utility knife, and trim vertically at the panel edge to fit flush with the door frame.
- At the bottom of each panel, trim along the horizontal door seam so it folds cleanly with door movement.
Repeat for Remaining Panels
- Repeat steps 2–4 for each panel, top to bottom.
- For rollers, cut a small notch. For locks or handles, slide the panel behind and trim cleanly, don't stick it down until it's positioned properly.
- Keep panels tight against each other to minimize airflow gaps.
Final Press & Clean-Up
- Press all panel edges firmly with your hands or the squeegee, paying extra attention to corners.
- Double check for loose sections or lifting corners and press again.
- Confirm your garage door is still properly balanced after adding the panels' weight, follow your door manufacturer's guidance, and call a professional to adjust tension if needed.
📄 View / download printable guide
Official printed installation guide, included in your kit
You're Done
Enjoy a warmer garage in winter, a cooler space in summer, and lower energy bills year-round.
Window Film
For garage doors or walls with a window. Each kit includes 4× clear window film sheets (42" × 62") and 70 ft of adhesive tape, enough to seal up to four standard windows.
Clean the Window Surface
Thoroughly clean the entire window frame and perimeter where the tape will be applied. Remove all dust, dirt, and grease, and make sure the surface is completely dry and lint-free.
Apply Double-Sided Tape
Apply the included double-sided tape around the entire perimeter of the window frame and press firmly for full contact.
Expose the Adhesive
Once the tape is fully applied, carefully peel off the paper backing. Avoid touching the adhesive with your fingers.
Attach the Window Film
Starting at the top corner of the window, attach the film to the exposed adhesive.
- Leave 2–3 inches of excess film on all sides (top, bottom, and sides).
- Lightly press the film into place as you work your way around.
- Do not stretch the film at this stage.
Shrink the Film Using Heat
Set your hair dryer to the highest heat setting. Blow warm air from the top down, moving evenly across the film, keeping the dryer a few inches away from the surface. The film will gradually tighten and become clear and wrinkle-free.
Trim Excess Film
Once the film is fully tightened and clear, use scissors or a razor to carefully trim excess film along the window frame, avoiding damage to the wall or frame. Take your time for a clean, professional finish.
📄 View / download printable guide
Official printed installation guide, included in your kit
You're Done
Nice work. Your window is now sealed against drafts and cold air, sit back and enjoy a more comfortable, energy-efficient space.
Garage Door Threshold Seal Strip
An easy-to-install floor threshold that creates a tight, weather-resistant barrier to block water, dust, and debris from entering under your garage door.
Clean & Dry the Surface
Sweep the garage floor area where the seal will go. Wipe the concrete with degreaser or rubbing alcohol to remove dust and oil, then let it dry completely.
Measure the Garage Opening
Measure the width of the garage door opening (left to right) and write down the measurement.
Cut the Seal to Size
Dry-fit the seal across the opening to confirm it fits edge to edge, then cut it to match your measured width.
Position & Mark the Placement
- Place the seal where it will be installed.
- Align it so the garage door closes directly onto the flat side, the side marked with the thinner yellow line, with the raised ridge facing inside the garage. Close the door gently to confirm it lands flat on the seal.
- Mark the outline on the floor with chalk or marker so you can reposition it accurately after applying adhesive.
Apply the Beest Bond Silicone Adhesive
- Load the Beest Bond adhesive into a caulking gun and cut the nozzle tip at a 45° angle (start with a small opening).
- Lift the seal and apply adhesive inside the marked outline on the concrete, in a continuous bead or zig-zag pattern along the full length.
- Use enough adhesive to hold the full length securely, especially along the edges.
Install the Seal & Press Firmly
- Carefully place the seal onto the adhesive following your outline.
- Press down firmly along the entire length (by hand, with a roller, or by stepping carefully), with extra pressure along both edges.
- Wipe away any excess adhesive.
📄 View / download printable guide
Official printed installation guide, included in your kit
You're Done
Your garage door now has a tight, weather-resistant seal that keeps water, dust, and debris out.
Garage Door Seal (Top & Sides)
Creates a tight perimeter seal to help keep drafts, dust, and moisture out of your garage.
What you'll need: measuring tape, scissors, cleaning cloth + rubbing alcohol (recommended), pencil/marker, a drill with a 3/32" bit for pilot holes, a step stool or ladder, and a Phillips head screwdriver or drill bit.
Included in the box: seal strips (26.25 ft for single door, 34.5 ft for double door) plus screws and screw caps (20 of each for single door, 40 of each for double door).
Clean the Surface
If applicable, remove any existing cracked or damaged seal. Clean the garage door frame (top and both sides) where the seal will attach, removing dust, paint flakes, and oil. Let it fully dry before sticking.
Measure the Top and Sides
Measure the top width of the door frame plus the left and right side heights, and mark your measurements.
Cut the Seal to Size
Cut the top piece to width and the two side pieces to height. For a clean corner fit, you can miter-cut the ends at 45° where the top meets the sides (optional, but looks best).
Dry-Fit & Mark Placement
Hold each piece in place before removing any backing. Position the seal so the flexible flap lightly contacts the garage door when closed (snug, not overly bent), then mark a light guide line for straight placement.
Peel, Stick & Press Firmly
Start with the top piece: peel a few inches of backing, stick it to your guideline, then continue peeling gradually while pressing along the length. Repeat for both side pieces, and press firmly for 30–60 seconds along the entire strip, with extra pressure on the edges.
Reinforce With Screws
- Insert a screw cap onto each screw and screw through the adhered edge into the frame for a permanent hold.
- Space screws about every 12 inches, with one close to each end.
- If screws are difficult to install, pre-drill small pilot holes with a 3/32" bit to prevent the frame from splitting.
- Push the caps onto each screw head for a clean, finished look.
📄 View / download printable guide
Official printed installation guide, included in your kit
Entry Door Draft Stopper
A quick add-on for sealing the bottom of entry doors against drafts.
Clean & Dry the Surface
Clean the bottom edge of the door where the strip will stick, removing dirt, dust, and oil or grease. Let it fully dry before applying.
Measure the Door Width
Measure the length of the bottom of the door and mark the measurement on the draft stopper so you know the exact size needed.
Cut to Size (and Warm It Up)
Cut the strip to the measured length using scissors. For the best stick, use a hair dryer to gently warm the adhesive side and/or the door surface for a few seconds (warm, not hot).
Apply the Strip to Your Door
- Peel a small section of the backing first, don't remove it all at once.
- Align the strip along the bottom edge of the door and press firmly as you go, peeling the backing off gradually.
- Run your hand along the strip and press for 30–60 seconds to secure. If needed, warm it again lightly and press once more.
📄 View / download printable guide
Official printed installation guide, included in your kit
Frequently Asked Questions
Do I need any special tools?
Most components only need household tools: scissors or a utility knife, a clean rag, isopropyl alcohol or rubbing alcohol, and a hair dryer for the window film and entry door stopper. The threshold seal needs a caulking gun for the Beest Bond adhesive, and the top & sides door seal needs a drill with a 3/32" bit if you choose to pre-drill pilot holes.
What temperature should I install in?
Moderate temperatures work best for every adhesive-based component, above 40°F / 5°C for the threshold seal, and room temperature or warmer for the top & sides seal, since cold weather can reduce stickiness.
Does my kit include every component on this page?
Not necessarily; it depends on which kit size and tier you ordered. Check your packing list, or reach out to our support team below and we can confirm exactly what shipped with your order.
How long do adhesives need to cure?
For the threshold seal, avoid driving over it for at least 24 hours (or follow the adhesive label). For the top & sides seal and window film, press firmly for 30–60 seconds during installation and avoid stressing the seal for the first day.
What if my garage door has braces, rollers, or a window?
Cut small notches around rollers, and trim panels to slide behind locks or handles. For hurricane or wind braces, you can remove them before installing and reinstall after (double check this won't void your garage door warranty), or simply trim the panels around them. If your door has a window, use the Window Film section above.
