Gap Fillers Kit | Gap Sealant
Tiny gaps massive energy leaks!
Don’t let sneaky draughts, dust, and pests creep into your home—seal them for good with the Gap Filler Kit. This versatile, durable, and flexible kit is the ultimate DIY solution for stopping air leaks, cutting energy bills, and boosting year-round comfort. Perfect for door and window frames, skirting boards, vents, and more, this kit is designed to fill, seal, and stay put— no cracking, shrinking, or messy residue. Fill the gaps. Lock in comfort. Save money. 🔥❄️
🚛 Delivery direct to your doorstep
Pickup available at Preston Warehouse
on Tuesdays and Fridays 8AM - 3PM🔄 Replacement guarantee
🗓️ Availability: In Stock
🏅 2 years product warranty
Pairs well with
Gap Fillers Kit | Gap Sealant
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Product details
Description
Specification
| Kit Components | Medium Kit | Large Kit |
| Tubes of Ultraclear | 3 | 5 |
| Sealant Spreaders | 1 pack of 4 | 1 pack of 4 |
| 10mm Filler Rod |
5 metres | 5 metres |
| 6mm Filler Rod |
- | 5 metres |
Medium Kit: Suitable for a less "gappy" home
- Three (3) tubes of Ultraclear (also known as Ultra Clear or FulaSeal 701 Ultra Clear) – it will fit any cartridge caulking gun
- One pack of gap sealant spreaders giving you a smooth surface finish
- 5 metres of 10mm gap filler rods to provide a surface for the Ultraclear to seal against for larger-sized gaps
Large Kit: Suitable for the more "gappy" home
- Five (5) tubes of Ultraclear (also known as Ultra Clear or FulaSeal 701 Ultra Clear) – it will fit any cartridge caulking gun
- One pack of gap sealant spreaders giving you a smooth surface finish
- 5 metres of 10mm gap filler rods to provide a surface for the Ultraclear to seal against for larger-sized gaps
- 5 metres of 6mm gap filler rods to fill the small-sized gaps
What area will this Gaps and Cracks kit cover?
- Each tube contains 300g of water-based sealant
- Each Roll of back block Foam Filling Rod can provide a sealing surface of 5 lineal metres of larger sized gaps that are between 5-10mm in size
| ULTRACLEAR | Lineal Metres Per Tube | Vents / Ducts per Tube |
| Floorboard Gaps | 20 | |
| Skirting Board Gaps | 10-15 | |
| Architraves | 10-15 | |
| Wall Vents | 4-8 | |
| Heating Ducts | 10-12 |
Cathedral Ceilings:
- Slightly draughty = 1 - 3 tubes
- Medium draughty = 3 - 5 tubes
- Very draughty = 5 - 8 tubes
How To Install
What you will need:
- A damp cloth
- Caulking gun
How it works:
With the back block foam filling rod, filling large gaps is made easy. Just press the best sized filling rod into the gap leaving a 5mm space at the surface of your gap for you to seal with the Ultra Clear Gap sealant. Sealing over the rod will ensure it stays in place and that gap is sealed completely.
FulaSeal 701 Ultra Clear is a water-based, highly flexible gap sealant that is white when applied and clear when dry. This virtually invisible sealant is flexible enough to expand and contract with the movement of a building.
Ultraclear is applied to gaps and cracks using a caulking gun and effectively draughts around floorboards, architraves, skirting boards, windows and air vents.
Use the silicone spreaders during the caulking process, to create a smooth and even surface. Excess sealant can be easily cleaned up with silicone spreaders and a damp cloth when wet.
Watch this playlist about Sealing Gaps and Cracks
Delivery
Q: Can I collect my order?
A: Yes you can! A “Ready for Pickup” email will be sent to you when you order is ready to be collected. Please click this link for the Click and Collect details. Note: this Collection Centre is in Preston in Victoria, NOT Prestons in NSW.
Q: When will my order be despatched?
A: Generally, your order will be despatched within 1 to 3 business days.
Q: How will my order be delivered?
A: Depending upon the size of your order, it will be shipped either by AusPost or a specialist courier (note this is NOT an express courier).
Q: Will my order be tracked?
A: Yes! When your order is consigned, you will receive a tracking number that will show you where your order is and its expected delivery date.
AusPost - Track your order here
Specialist Courier - Track your order here
Please note: Orders with two or more items may arrive in separate parcels with no additional shipping charge
Q: When will my order be delivered?
A: All AusPost orders are picked, packed and despatched within 2 business days. Our experience with AusPost indicates that your order will be delivered within 2 - 5 business days. Clearly this will fluctuate at peak shipping times such as Christmas and EOFY.
If your have selected the specialist courier, your order will be packed and despatched within 3 business days. Please note, this is a specialist courier - NOT an express courier. The courier will NOT get your order to your home faster, but it will deliver over-sized items that AusPost cannot deliver.
Q: What happens if my order gets lost during transit?
A: On rare occasions we have had orders go missing. ecoMaster has solid procedures in place and photograph every order that leaves our warehouse. The delivery of our orders at our local post office are videoed and we track the progress of orders. If a delivery date appears to be beyond expectation, we will raise a query with the freighter on your behalf. If your order cannot be found during transit, we will send a replacement.
Q: What happens if my order is stolen after delivery?
A: We will check with the freighter to ensure that the order was delivered to the correct address. If that is confirmed, and your order has been stolen from your home after delivery, please raise a Police Report. In practice, we have had very little of this type of incident.
FAQ
Frequently asked questions
Q: What is the difference between Ultra Clear, Ultraclear and Fulaseal 701 Flexible Ultra Clear?
A: There is no difference - it is the same fabulous product.
Q: What surfaces can I seal with Ultraclear?
A: Ultraclear can be used with fibreglass, glass, metal, plasterboard, concrete, cement sheet, ceramic tiles, brick and timber. Due to its water resistance, Ultraclear can be used to seal gaps and cracks in bathrooms and kitchens. Ultraclear can be used with plastics but test it first. Ultraclear can also be used to seal polycarbonate roofing.
Q: Do I need to buy a caulking gun?
A: Yes you do. There are lots of choices for caulking guns at your local hardware store. Make sure to invest in a caulking gun that allows you to withdraw pressure on the gun when applying the sealant. Some cheaper guns maintain pressure on the tube when you let go of the trigger causing the Ultraclear to spill out of the gun. If you are based in Melbourne, we have a rental service where you can hire top quality trade tools for a week to help you get your jobs done!
Q: I've never tried caulking gaps myself yet. Do you provide guides on how to go about this?
A: We do have instructional VIDEOS to ensure you get a great finish. The videos are also available under the How To tab. All the instructional videos you'll need for a successful DIY caulking job are there.
Q: How do I make a neat finish with Fullers Ultraclear?
A: Use the silicone spreaders included in the kit.
Q: Does Ultraclear shrink once it is installed?
A: Yes - it can shrink a bit if the gaps is very large. Just let it dry completely and reapply a thin layer over the top of the existing sealant.
Q: Is Ultraclear difficult to clean up like silicone?
A: No. One of the reasons we love Ultraclear is that it is a water-based sealant so it's very easily cleaned with water. Just wet a piece of cloth with water, and wipe off the excess sealant from the surface. Whilst it is easy to do, it is important that this is done BEFORE the sealant dries. Once Ultraclear dries it is much harder to remove and it is a mechanical removal.
Q: What if I applied Ultraclear without first cleaning the area of application?
A: You will be sealing the dust and other foreign particles in too. Cleaning the area to be sealed FIRST is a critical step to ensure maximum adhesion. Ultraclear dries to a transparent finish. It will lose that transparency if you can see dust and grime sealed in with it.
If you missed cleaning the surface first before application, and the sealant is not yet cured, you can use a damp cloth to remove it. Once the sealant is cured, you will have to use a knife, scraper, or other mechanical means to remove it.
Q: Can I use this on a metal surface?
A: Yes, of course. Although adhesion to metal is a bit different when compared to timber or cement. This can be improved by light sanding prior to sealant application.
Q: How long will it take for the sealant to cure?
A: Full cure is normally achieved in 5-7 days depending on bead size, weather conditions and substrates. Larger sections of sealant will take longer to cure. Fulaseal 701 Flexible Ultra Clear sealant relies on water evaporation to cure; therefore applying sealant on non porous substrates will extend curing time. During warmer weather, the sealant will cure much faster.
Q: Can I paint over the Ultraclear sealant?
A: Yes, it can be painted with water based paints once tack free (approximately 30 minutes). If you will be using oil based paint, though, please allow 5-7 curing days before painting. If the weather is cold, the curing process may benefit from heating the space to cure the sealant more quickly.
Q: How flexible is the sealant?
A: Offers permanent flexibility with up to 25% joint movement capability.
Q: Will the sealant go mouldy?
A: It is mould resistant, so great for use in bathrooms and kitchens.
What is draught proofing, and why is it important?
Draught proofing means sealing up all the gaps (big and small) where air sneaks in or out of your home—around windows, doors, vents, chimneys, and even curtains. It’s one of the easiest and most effective ways to improve comfort, reduce energy waste, and lower your heating and cooling bills. Generally draught proofing is the first step in you making your home energy efficiency. The major component of a home’s energy costs is used on heating and cooling. Your home can’t be effectively heated or cooled if you can drive a “mac truck” under your front door.
Will this really make a difference to my energy bills?
Yes! Draught proofing reduces how often your heater or air con needs to run. Less hot air escaping in winter, less heat sneaking in during summer = lower energy use, more comfort, and more savings. In the ecoMaster test house, which was draught proofed more than 20+ years ago, we saved 50% of our $2,500 heating bill in the first year after completing it. And of course, we have continued to save that amount every year.
How do I know where the draughts are coming from?
A walk-through your home on a windy day can help you feel where air is leaking in (like under doors or around windows, chimneys and exhaust fans). You can also check unused heating vents, behind curtains, skirting boards, cornices and picture rails —these are often the hidden culprits.
If you’re not sure where to start, you’ve got three great options:
You can try to track down the draughts yourself, or get a little help with our Find and Fix My Draughts program—designed to guide DIYers in spotting every sneaky gap in their home. Prefer to leave it to the pros? We can connect you with a trusted draught proofing technician in your area for a full in-home assessment. Just get in touch and we’ll point you in the right direction.
What products do I actually need?
That depends on where the leaks are!
- Draught Dodgers for effectively sealing doors and windows.
- Chimney Draught Stoppers block open fireplaces.
- Goodbye Heating Vents seal off unused ducted heating.
- DraftStoppas stop airflow through ceiling exhaust fans.
- Invisible Pelmets help block airflow and heat loss behind curtains.
- UltraClear seals gaps and cracks where one surface meets another.
If you’re not sure, start with either work with the online program Find and Fix My Draughts, follow the Draught Proofing Information Hub one room or hire a draught proofing technician. Or contact us for a referral to a trusted draught proofing technician in your area.
Can I install draught proofing myself, or do I need a tradie?
Most draught proofing products are totally DIY-friendly—especially with the help of our video guides. They’re designed for everyday Aussies, not just seasoned professionals (althought they also buy ecoMaster products). If you’re comfortable using basic tools, you can do this. We indicate where any particular product requires an experienced hand.
If you could prefer for a draught proofing assessment and professional installation, please contact us for a referral to a trusted draught proofing technician in your area.