Gap seal for sectional doors – protection against cold & dirt
Say goodbye to drafts, dust, and unwanted visitors. In just 10 minutes, you'll know how to choose the right gap seal, install it cleanly – and immediately experience greater comfort.
Introduction
Is there a draft coming from the floor? Dripping damp, a cold garage, mice in winter? The gap under your sectional garage door is like an open invitation. A modern gap seal closes this weak point: magnetic, trimmable, robust – no drilling required on steel, with an adapter strip for wood/aluminum/plastic. In this guide, we'll show you how to measure, select the right product, installation tips, and maintenance. We've also included links to tested sets for sectional, roller, and access doors.
Table of contents
✅ Advantages & Benefits
Less heat loss, less draft – noticeably more pleasant, especially in winter.
Reduces dust, splashing water and makes it difficult for rodents to enter – with stainless steel mesh/rodent protection.
Magnetically mounted, can be shortened on site – ideal for existing garages and workshops.
⚙️ Technical Background
The sealant adheres directly to steel. For wood/aluminum/plastic, an adapter strip provides the magnetic base.
The more uneven the ground, the wider the profile should be. Wider sets compensate for unevenness better.
Sectional doors: medium contact area, very good sealing effect. Roller doors: wide profiles for uneven floors.
🧭 Selection & measurement in 60 seconds
- Length: Measure gate leaf width
- Gap measurement: determine the largest measurement at several points.
- Substrate: Steel = directly magnetic; Wood/Aluminum/Plastic = adapter tape.
- Unevenness: the more uneven, the wider the profile (see table).
Tip: Use a measurement sheet – it ensures the selection is correct.
📦 Product recommendations & comparison
Selected sets/products for typical use cases. Details and scope of delivery on the product page.
| product | Width | Typical use | Highlights | link |
|---|---|---|---|---|
| MagSeal – Sectional Door | approx. 400–450 mm | Garages & halls with steel panels | Magnetic, stainless steel mesh (rodent protection), tool-free | About the product |
| DoorMag Kit 9.2 m | 400 mm | Sectional doors – complete set | Set including rodent protection plates & connectors – quick assembly | To the set |
| RollMag Kit 9.2 m | 290 mm | Rolling/High-speed doors | Magnetic additional seal via rubber bottom lip | To the set |
| PedDoorMag (door) | 1.0 m (can be shortened) | Side doors/basement – 4–55 mm gap | Magnetic, rodent-proof edge, no drilling required | About the product |
| Adapter band SMB 100 | – | Wood/aluminum/plastic substrates | Self-adhesive – magnetic base for sealing profiles | About the product |
🔧 Application & Assembly
- Clean the surface (dry, grease-free).
- Cut to length; deburr edges.
- Non-magnetic? Apply adapter tape SMB 100 and press firmly.
- Align the profile, attach it magnetically, and press down evenly.
- Close/open the gate, check for a tight seal – fine-tune if necessary.
- For roller doors: Additional profile over existing bottom rubber lip.
- If necessary, add a threshold/bottom profile to protect against standing water.
- For very uneven ground, choose a wider profile/set.
💡 Practical examples
🧰 Maintenance & Care
- Wipe the sealing surface monthly (adhesion and effectiveness remain high).
- Readjust after the first few days (settling/contact pressure).
- For industrial doors: Document visual inspections during maintenance intervals.
🏗️ Trust & Advice
Specialist retailer & installation expertise: Tormeister 24 supplies tested components and clear recommendations. We can also assist with measurements upon request.
Free selection check: Send us your gate type, clear width and largest gap dimension – we will confirm the set & accessories.
❓ FAQ
Will the sealant adhere without drilling?
Yes – magnetically attaches directly to steel. For wood/aluminum/plastic, use the SMB 100 adapter strap.
Does it also keep water out?
The seal significantly reduces splashing water and drafts. For protection against standing water, we additionally recommend a threshold/floor solution.
How do I determine the correct width?
Choose according to ground level and door leaf depth: the more uneven and deeper the door leaf, the wider the profile. Roller doors often benefit from wider sets.
How long will the seal last?
With proper installation and regular cleaning, it is very durable. Side protection plates further increase its service life.
Close it now – noticeably more comfort immediately
The right gap seal stops drafts, keeps dust out, and saves energy. Choose your set or have your measurements checked quickly.
To the sectional door roller door/high-speed door collection
