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Ultraclear | FulaSeal 701 Ultra | Clear Gap Sealant

Ultraclear | FulaSeal 701 Ultra | Clear Gap Sealant

Draught Proofing

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FulaSeal Ultra Clear Silicone Sealant is an easy to apply, highly flexible, water-based sealant that dries transparently. This sealant is suitable for many interior and exterior applications. It offers high joint movement capacity and excellent water resistance.

ecoMaster tested EVERY sealant: foam, silicone, polyurethane and acrylic. Hands down, this was the best product for sealing gaps:

  • Floorboard gaps
  • Skirting boards
  • Wall vents
  • Heating ducts 
  • Architraves 
  • Picture rails 
  • Cathedral ceilings

Key Benefits:

  • Long-lasting: depending on the location and exposure to elements, this water based sealant can last anywhere from 10-20 years.
  • Highly flexible: this flexible sealant can adapt to most expansion and contraction of buildings without cracking unlike putty or wood fillers
  • Mould resistant: this sealant provides an ideal waterproof barrier that prevents mould and mildew growth.
  • Easy clean-up: after applying the sealant but before it has cured, use a damp cloth to gently wipe away any excess in order to achieve a clean finish.
  • Paintable: after allowing the surface to dry completely, it can be painted with ease


How it Works:

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.

During the caulking process, excess sealant can be easily cleaned up with a damp cloth when wet.


  • FulaSeal 701 Ultra Clear in 300g tubes.
  • Ultraclear is available in 1, 5, 10, 15, or 20-tube bundles
  • See “Specs” tab for coverage details


  • High quality product which works to reduce draught
  • Virtually invisible solution for sealing gaps
  • Easy to apply with a caulking gun
  • Can be easily cleaned up with a damp cloth when wet
  • Flexible sealant will accommodate most movement of a building
  • Durable
  • Paintable
  • Mould-resistant
  • UV stable
  • Low odour
  • Non hazardous

What You Will Need:

  • A damp cloth
  • Caulking gun

Suitable For:

  • Sealing floorboard gaps
  • Sealing wall vents
  • Sealing skirting boards
  • Sealing around floor vents
  • Sealing gaps in cathedral ceilings

 Pro Tips:

  • Ensure the area is thoroughly cleaned before the sealant is applied to ensure thorough adhesion.
  • Clean up any excess immediately after application. Removal of excess product after Ultraclear has dried is challenging.
  • If you are sealing really big gaps, you might find that you need a second application of Ultra clear to fill the gap to the same surface level as its surroundings.

Care Instructions:

  • Once applied, there is no “after care” needed but do make sure it is fully dried (cured) before cleaning the area for the first time.


How much Ultraclear will you need?

Each tube contains 300g of water-based sealant.


  • Floorboard Gaps - coverage 20 lineal metres per tube 
  • Skirting Board Gaps - coverage 10-15 lineal metres per tube 
  • Wall Vents - coverage 4-8 vents per tube 
  • Architraves - coverage 10-15 lineal metres per tube 
  • Heating Ducts - coverage 10-12 ducts per tube 
  • Cathedral Ceilings 
    • Slightly draughty = 1 - 3 tubes
    • Medium draughty = 3 - 5 tubes  
    • Very draughty = 5 - 8 tubes



How To

How to Apply Ultraclear:

Here are several how to videos by ecoMaster’s Technical Director, Maurice Beinat, on how to apply FulaSeal UltraClear Gap Sealant: 

  • How to Seal Floorboard Gaps - please watch this video
  • How to Seal Skirting Board Gaps - please watch this video 
  • How to Seal Wall Vents - please watch this video
  • How to Seal Floor Heating Vents - please watch this video

 More information can be found at….

 If this is not what you are looking for try…



Q: What is the difference between Ultra Clear, Ultraclear and Fulaseal 701 Flexible Ultra Clear?
There is no difference - it is the same fabulous product.

Q: What surfaces can I seal with Ultraclear?
A: Lots of people use it to seal gaps and cracks in their homes as outlined in videos under the “How to” tab.  Ultraclear can also be used to seal polycarbonate roofing. Due to its water resistance it can be used to seal gaps and cracks in bathrooms and kitchens. It can also be used with fibreglass, glass, metal, plasterboard, concrete, cement sheet, ceramic tiles, brick and timber. It can be used with plastics, but test it first!

 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 withdraws the plunger when you let go of the trigger. Some cheaper guns maintain pressure on the tube when you let go of the trigger causing the Ultraclear to continue to spill out of the gun.  We do have professional caulking guns for rent in Melbourne [Learn More]

Q: I've never tried caulking gaps myself yet. Do you provide guides on how to go about this?
A: We do have how to Videos to ensure you get a great finish. Just go to the How To tab, and you should see all the instructional videos you'll need for a successful DIY caulking job.  And remember, Ultraclear cleans up in water, so if you do make a mess, it is easy to wipe it off (before it dries) and try again. 

Q: How do I make a neat finish?
A: Within a few minutes of application, finish the surface with silicone spreaders, wet spatula or other smooth implement. In some cases, such as with air vents, we find that a damp finger gives a good finish but be sure to wear a disposable glove.

Q: Does it shrink once it is installed?
A: Yes, It can shrink a bit if it has been applied in a thick manner. Just let it dry completely and reapply a thin layer over the top of the existing sealant.

Q: Is this 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.

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. 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 evaporation to cure; therefore applying sealant on non porous substrates will extend curing time. During warmer weather, the sealant will cure much faster.  During winter, you may need to heat the area to ensure that Ultraclear cures. 

 Q: Can I paint over the 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.

Q: How flexible is it?
A: Offers permanent flexibility with up to 25% joint movement capability.

Q: Will it go mouldy?
A: It is mould resistant, so great for use in bathrooms and kitchens.


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 2 business days.    

Q: How will my order be delivered?
A:  If this is the only product in your order, it will be delivered by Australia Post.  

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. 
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.

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 the 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 AusPost 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 AusPost 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.



Q: What is the product warranty for Fullers Ultraclear? 
The Fullers Ultraclear has a product warranty of 2 years, but can be effective for much longer than that.   We have used Ultraclear since the early 2000s and have had very few issues.  

Q: What is the installation warranty for Fullers Ultraclear?
A: As Ultraclear is a DIY product there is no warranty on installation.  

However, in order to get the best value from your investment, here are a few tips that will help: 

  • Thoroughly clean the surface that your Ultraclear sealant is to be adhered to.  In situations where Ultraclear has not dried clear, an unclean surface will undoubtedly be the cause.  Clean the area, then clean it again and do it again.  Stop foot traffic, dogs, cats and grandma from running through the area you are working on. 
  • If it is cold during application, please ensure that the area is warmed sufficiently to allow for curing of the product. 
  • Smooth our the sealant surface before it dries - either with a silicone spreader or a damp finger.
  • Clean up any excess before it dries. 

To get the best value for your investment, please, PLEASE watch the installation videos before you proceed.  

If you have any questions, contact the ecoMaster team.  We are all ex-installers and have done this work thousands of times before.  We are here to help you.

Q: What do I do if I have a problem with this product?  
A: Refer to our Returns / Refunds page [Learn More].  Our Research and Development team will be keenly interested to learn of any product failure and will want images and samples the product (if possible), so they can determine what the cause of failure was.    

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Customer Reviews

Based on 11 reviews
Patrick Jones
Great stuff

Goes on easy, does take a while to cure, cleans up easily too.

Thank you Patrick! We appreciate your feedback!

Dezi George
Excellent product and fantastic service.

Ok, listen up, those that know me know I say it as it is. The team are very friendly, knowledgable and the prodcut works! Yes, it works! The video was really helpful and you guys made it look super easy. Well it was! Thank you so much, and to those of you thinking about it, just place your order with this group. You will not be dissapoiinted. Thank you so much. Dezi George.

Hi Dezi,

You've left a smile on the faces of our whole team with your kind words! It's always amazing to hear that we've been successful in our goal of providing our customers with the best possible experience. Thank you and have a great day!

Great job indoors and out

This product is economical, easy to use and useful pretty much anywhere it seems. I have used to seal lots of gaps indoors especially between polished timber flooring and painted walls because it dries clear. I've just used it to cover screws on ground back screws on timber handrails outdoors before painting.

We truly appreciate your continuous support and trust in us Lynne. This type of feedback about how well our products perform, really brightens our day!
Thank you for taking the time to share with us and the community.

Giuseppe Taroni

Best gap fillers I have ever used, it dries ultra clear

Thank you so much for your review Giuseppe. We appreciate you being a customer and hope to see again soon!

Ben M
Couldn't Believe the Gaps this Filled

I love this stuff, it's been so easy to apply and fill the gaps that I'm now obsessed with finding new gaps so I can plug them. The gaps it can fill are incredible, you can nearly use it like a 3d pen in some places! The water cleanup is such a relief after dealing with silicone, especially someone like me who is pretty ham fisted with the stuff. Cannot recommend enough!

Hi Ben, thank you so much for leaving an excellent rating. We personally love what this product does and are so pleased that you feel the same way! We really appreciate your business.