Gap seals for gates and doors – maximum protection against cold, dirt and rodents in autumn and winter
For garages, industry, and loading equipment. Effective immediately. Easy to install.
Introduction: Why act now?
When temperatures drop, the pressure on your buildings increases: cold drafts, damp, and vermin seek the smallest of ways in. Gaps in gates and doors then act like open invitations. The result: higher heating costs, dirty areas, and, in the worst case, pest infestation.
The good news: Modern gap seals close these gaps quickly and permanently. They're easy to install, can be cut to size, and offer effective rodent protection thanks to their stainless steel mesh. Just what you need in the fall and winter.
What you will take away from this editorial
We'll show you which seal is right for your gate or door, what really matters during the cold season, and how you can achieve noticeable improvements in just a few steps – both privately in your garage and professionally in logistics.
Basics: What do modern gap seals do?
Gap seals seal linear openings between the door leaf and the building structure. They reduce heat loss, block dust, and prevent rodents from biting through. Magnetic solutions adhere to steel panels without drilling and are ideal for retrofitting.
Three factors are crucial: adhesion (magnetic or with adapter), mechanical robustness (stainless steel mesh to protect against rodents), and fit (can be shortened, suitable height/width). If these factors are met, the sealing performance immediately increases.
Why stainless steel mesh makes the difference
Traditional brush seals offer little resistance to rodents. Stainless steel mesh or edges are ideal: They are tough, durable, and prevent bites – a real game changer for hygiene-critical areas and private garages with food sources.
Autumn & Winter: Seasonal pressure increases
As outside temperatures drop, indoor spaces become a place of refuge. Mice and rats follow drafts, squeeze through the smallest gaps, and nest in warm areas.
At the same time, every gap acts like a permanent radiator opponent. The result: noticeably higher energy costs and an unpleasant indoor climate. Sealing now saves twice: less pest pressure, less heat loss.
Practical advantages in the cold season
- Thermal protection: lower heating load, more stable indoor temperatures
- Hygiene: Stainless steel mesh effectively reduces pest access
- Substance protection: less moisture, less corrosion/mold
Applications: Garage, industry, loading ramps & doors
Whether it's an entrance gate, warehouse door, ramp, or steel door – the requirements are similar, but the solutions differ in detail. Below you'll find a concise overview before we delve into the product details.
Garages & sectional doors
The goal is a dry, clean, and warm room. Magnetic seals can be quickly retrofitted, are shortenable, and require little maintenance—ideal for private use.
Industry & Logistics
Space and robustness are key here: large-format kits, stable grids, and easy cleaning. Seals must be durable and meet hygiene requirements.
Loading technology
Ramps are critical points. Seals are always supplied as a set, left and right , to ensure the joints are completely sealed and temperature fluctuations are minimized.
Steel doors & technical rooms
Magnetic door seals secure low thresholds, cable entryways, and side doors. This is especially useful if adjacent rooms are heated.
Product overview & detailed presentations
All products listed here are designed for easy installation , long service life and high protection .
DoorMag 400 mm – variable length with stainless steel grille
Product Details | For garages, side doors, and smaller sections.
The compact 400 mm DoorMag is the quick solution when gaps need to be closed in specific locations. The integrated stainless steel mesh reliably blocks rodents, while the magnetic adhesion simplifies installation. Cut, press, and you're done.
- Variable length, can be shortened individually
- Stainless steel mesh to prevent biting through
- Magnetic adhesion – usually without drilling
- Ideal for transitions, side areas, side doors
MagSeal Kit 9200×450 mm – Complete solution for industrial doors
Product information | Large-format sealing with rodent-proof stainless steel mesh.
The MagSeal Kit is optimized for large-area industrial doors. The high cover noticeably improves the sealing effect – especially in halls with high air circulation. Lengths over 9.2 m can be elegantly achieved using connecting strips (item no. 131007038).
- Format: 9200 × 450 mm – ideal for wide gates
- Stainless steel grid: hygienic & rodent-proof
- Expandable via connecting strips
- For high loads in logistics & production
MagSeal for sectional doors – magnetic, shortenable, rodent-proof
About the product | The scalable solution for private and commercial use.
This MagSeal version is designed for panel thicknesses of approximately 30–50 mm. It can be cut to size, adheres magnetically to steel panels, and features a robust rodent protection edge. Perfect for garages, workshops, and smaller gate systems.
- Magnetic adhesion for steel panels
- Can be shortened for an exact fit
- Integrated stainless steel rodent protection edge
- Very good sealing performance against drafts
MagAdapter SMB100 – Solution for non-magnetic panels
About the product | Makes magnetic seals universally applicable.
Not every surface is magnetic—especially with special sandwich panels or renovation projects. The MagAdapter SMB100 solves this problem and makes MagSeal/DoorMag compatible with virtually all surfaces. This ensures quick and clean installation.
- Easy retrofitting on non-magnetic surfaces
- Clean, secure adhesion for magnetic seals
- Can be combined with MagSeal & DoorMag
PedDoorMag – Door gap seal for steel doors (SAMT 1000/1500/2500)
Variants: SAMT 1000 mm , SAMT 1500 mm , SAMT 2500 mm
PedDoorMag is the magnetic door seal for steel doors – perfect for utility rooms, basements, workshops, and side doors. All lengths can be shortened, installation is possible without drilling, and the robust rodent protection edge is durable.
- Magnetic adhesion – door leaf friendly and fast
- Can be shortened to size – three lengths to choose from
- Sealing range typically 4–55 mm
- Low maintenance & durable
Loading technology – DockMag/Sets for left & right sealing
To the collection | Always as a set (left & right) – for tight, safe ramps.
Loading ramps are logistical hubs. Seals close the side gaps, reduce drafts, and keep dust out. Our set logic ensures that both sides are sealed precisely – a small measure with a big impact.
- Set of two seals: left & right
- For DockMag/SAML & similar systems
- Easy to clean, robust in continuous use
For quick orientation we recommend the following products:
- Gap seals for sectional doors
- Sectional garage doors
- Door seals for steel doors
- Gap seals loading technology (sets)
- Contact & Advice
Assembly: Step by step
The following steps are considered a proven procedure for magnetic seals on gates and doors. Check beforehand whether the surface is magnetic—if not, use the MagAdapter SMB100 .
Preparation
- Open the gate/door completely and clean the work area (free of grease and dust).
- Check the gap width and roughly determine the required length of the seal.
- For sensitive surfaces, apply adhesive tape as cut protection.
Cutting & Adjustment
- Mark the seal to length (use a steel ruler).
- Make a straight cut and deburr the edges.
- Fit test: put it on, check the fit and support.
Mounting on the magnetic surface
- Apply the sealant and apply it evenly from one side to the other.
- Apply light pressure to ensure that the magnetic surface is in full contact.
- Check corner areas and readjust if necessary.
Mounting with MagAdapter SMB100
- Attach adapter strips to the surface according to the instructions.
- Check adhesion, then apply the magnetic seal as above.
- Final inspection of transitions and butt edges.
Functional test
- Open and close the gate/door several times and check that it runs properly.
- For the door drive, test the peak force and re-learn if necessary.
- Visual inspection: no open joints, no wrinkles.
Practical examples from Mainz, Wiesbaden & surrounding areas
Private garage, Wiesbaden
Recurring mouse infestation despite brush seals. Solution: MagSeal cut and installed for sectional doors , closing the gap in the floor section. Since then, no more gnaw marks, and noticeably less cold.
Logistics hall, Mainz-Hechtsheim
Drafty ramp areas and dust ingress. Solution: Loading system sets (left and right) installed, plus a 9200×450 mm MagSeal Kit at the main gates. Result: quieter air zones, cleaner surface on the hall side.
Technical room doors, Mainz city center
Cold air in the stairwell, dust ingress into control cabinets. Solution: PedDoorMag SAMT 1500 mm , installed without drilling, cut to size. Result: noticeably less draft, doors close securely.
Comparison: Magnetic vs. mechanical seals
Both approaches have their place. The following table highlights their strengths and typical applications.
| criterion | Magnetic (e.g. MagSeal, PedDoorMag) | Mechanical (classic brushes/rubbers) |
|---|---|---|
| Assembly | Fast, usually without drilling | Often drilling/screwing necessary |
| Adjustment | Can be shortened, flexible | Restricted depending on profile |
| Rodent protection | With stainless steel grid very high | Brushes/rubbers more vulnerable |
| maintenance | Small amount | Depending on wear |
| Typical application | Garages, steel doors, hall doors with steel panel | Special profiles if magnetic surfaces are missing |
Product information
- MagSeal for sectional doors – quick retrofit.
- PedDoorMag 1000 mm – ideal for steel doors.
- MagAdapter SMB100 – if the surface is not magnetic.
Common mistakes and how to avoid them
Inappropriate length
Too short: open joints at the ends. Too long: ripples. Solution: Measure precisely, cut cleanly, and then test the fit.
Mounting without adapter on non-magnetic surfaces
Result: Insufficient adhesion. Solution: Insert MagAdapter SMB100 .
No functional test on the door drive
Danger: Incorrect force values, unnecessary shutdowns. Solution: Check the peak force after installation and re-learn it.
Dirty contact surfaces
Dust and grease reduce adhesion. Solution: Clean thoroughly before installing.
FAQ: Frequently asked questions
1) Do the seals hold even in frost?
Yes, the materials are designed for cold seasons.
2) Can I shorten the length myself?
Yes, pay attention to straight edges and clean deburring.
3) Do I need special tools?
In most cases, a folding rule, a steel ruler and suitable cutting tools are sufficient.
4) What if my panel is not magnetic?
Use the MagAdapter SMB100 .
5) Do the products also seal against insects?
Yes, smaller entrances will be closed; stainless steel grilles will also provide additional barriers.
6) What solution for very wide industrial doors?
MagSeal Kit 9200×450 mm with extension option.
7) Does MagSeal fit any garage section?
Designed for panel thicknesses of 30–50 mm; fitting test recommended.
8) Is there a solution for steel doors without drilling?
PedDoorMag adheres magnetically.
9) How do I clean the seal?
Soft cloth, mild cleaner, no harsh solvents.
10) Does the sealing affect the door travel?
Not if installed correctly. Retrofits always include a functional test.
11) Can I combine sections?
Yes, for larger widths use connecting strips.
12) What is the typical lifespan?
Many years, depending on usage and environmental conditions.
13) What are the specific benefits of stainless steel mesh?
High bite resistance, resistant to moisture and dirt.
14) Are there sets for loading ramps?
Yes, always as a set for left & right: to the collection .
15) Who helps with the selection?
Our team will provide prompt advice by phone or email.
