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Customer Feedback

96 customers have given us feedback with an overall rating of 4.5 out of 5.

All our reviews are written by real customers that have purchased this product from us and are publsihed without modification.

5 / 5 Stars

Reviewed by: A P

Good product, sealed the gaps in my sash windows, would recommend.

Published on: 11th August 2017

5 / 5 Stars

Reviewed by: A P

Does the job.

Published on: 11th August 2017

5 / 5 Stars

Reviewed by: N H

Does exactly what it claims to do

Published on: 2nd May 2017

4 / 5 Stars

Reviewed by: N H

Sore hand after 4 double height sash windows

Published on: 2nd May 2017

4 / 5 Stars

Reviewed by: S J

Good tool but a bit difficult to use in tight areas

Published on: 24th April 2017

5 / 5 Stars

Reviewed by: S J

Very effective

Published on: 24th April 2017

5 / 5 Stars

Reviewed by: M B

Gapseal was great in filling the gaps around my sash windows

Published on: 24th March 2017

5 / 5 Stars

Reviewed by: S E

Brilliant product. Effective and easy to use so very pleasing -thank you Gapseal

Published on: 5th February 2017

5 / 5 Stars

Reviewed by: S E

Just the job to make fitting easy, even fir me

Published on: 5th February 2017

5 / 5 Stars

Reviewed by: H B

Great service and product

Published on: 30th January 2017

5 / 5 Stars

Reviewed by: H B

Great

Published on: 30th January 2017

5 / 5 Stars

Reviewed by: M M

Adaptable to all spaces and immediately makes a difference

Published on: 25th January 2017

5 / 5 Stars

Reviewed by: L A

does what it says

Published on: 8th January 2017

4 / 5 Stars

Reviewed by: L A

Indispensible

Published on: 8th January 2017

5 / 5 Stars

Reviewed by: A L

The piping really plugs the gaps between sah windows.

Published on: 7th January 2017

4 / 5 Stars

Reviewed by: A L

It works.

Published on: 7th January 2017

5 / 5 Stars

Reviewed by: n K

works well.

Published on: 7th January 2017

4 / 5 Stars

Reviewed by: P B

Old sash windows needed draught excluding, this product does the biz.

Published on: 6th January 2017

5 / 5 Stars

Reviewed by: c l

very easy to use and effective

Published on: 5th January 2017

5 / 5 Stars

Reviewed by: c l

easy to use

Published on: 5th January 2017

5 / 5 Stars

Reviewed by: C R

A really good product - well done!

Published on: 30th December 2016

5 / 5 Stars

Reviewed by: C R

Straight forward to use - well designed

Published on: 30th December 2016

5 / 5 Stars

Reviewed by: P H

A great way of solving the draught problem associated with our irregular sash windows.

Published on: 10th December 2016

5 / 5 Stars

Reviewed by: P H

Worked as expected.

Published on: 10th December 2016

4 / 5 Stars

Reviewed by: S B

Filled my gaps well )

Published on: 4th December 2016

4 / 5 Stars

Reviewed by: S B

Couldn't have filled my gaps without it!

Published on: 4th December 2016

4 / 5 Stars

Reviewed by: N P

Easy to apply and effective

Published on: 4th December 2016

5 / 5 Stars

Reviewed by: G K

Excellent application tool, done what was asked of it.

Published on: 16th September 2016

5 / 5 Stars

Reviewed by: G K

Very pleased with product and will recommend it to people with sash Windows.

Published on: 16th September 2016

5 / 5 Stars

Reviewed by: E B

Thank you for such a superb product! I live on the south circular in London (a dual carriageway), and our bedroom has single glazed sash windows facing the road. Having finished fitting your product last night, the difference in noise (and I expect pollution) is immense. Last night's sleep was the best we've ever had in that house. My wife is very pleased! Having only found out about your product through the diydoctor website I suppose your main difficulty is to get people like me to hear about the product - I rent, and the reason I looked for a solution like yours is because our landlord rejected double glazing, and I didn't want to permanently seal the window shut. Have you tried directly targeting the rental market? I'm sure you'll have a lot of success once people hear about it.

Published on: 8th August 2016

5 / 5 Stars

Reviewed by: S B

Worked first time

Published on: 27th May 2016

5 / 5 Stars

Reviewed by: M T

Very easy to use

Published on: 11th April 2016

5 / 5 Stars

Reviewed by: M T

Amazing results stops draft.

Published on: 11th April 2016

4 / 5 Stars

Reviewed by: G L

Easy to use

Published on: 8th April 2016

4 / 5 Stars

Reviewed by: G L

Easy to install, certainly refused drafts and widow rattling

Published on: 8th April 2016

5 / 5 Stars

Reviewed by: G B

Did an excellent job in sealing our sash windows, easy to fit.

Published on: 8th April 2016

5 / 5 Stars

Reviewed by: A M

Easy to apply and does the job it was designed for.

Published on: 18th March 2016

4 / 5 Stars

Reviewed by: O P

Good product for sash windows

Published on: 16th March 2016

4 / 5 Stars

Reviewed by: O P

Flexible and can fit most windows

Published on: 16th March 2016

4 / 5 Stars

Reviewed by: F D

Simple solution to simple gaps

Published on: 9th March 2016

4 / 5 Stars

Reviewed by: F D

Simples!

Published on: 9th March 2016

4 / 5 Stars

Reviewed by: C W

For the size of gap it is designed for, it works well.

Published on: 28th February 2016

4 / 5 Stars

Reviewed by: K T

Sealed the gaps well - and stopped the draughts and heat loss

Published on: 24th February 2016

5 / 5 Stars

Reviewed by: A W

Just the job

Published on: 29th January 2016

5 / 5 Stars

Reviewed by: A W

Easy to use and re-useable which is great

Published on: 29th January 2016

5 / 5 Stars

Reviewed by: R F

Works a treat.

Published on: 27th January 2016

5 / 5 Stars

Reviewed by: R F

Works exactly as expected. Can fill the smallest of gaps.

Published on: 27th January 2016

4 / 5 Stars

Reviewed by: A S

Did the job fine

Published on: 26th January 2016

5 / 5 Stars

Reviewed by: A S

There used to be a gale blowing through the windows before we Gapsealed them

Published on: 26th January 2016

5 / 5 Stars

Reviewed by: A H

It did exactly the right job

Published on: 26th January 2016

3 / 5 Stars

Reviewed by: A H

It certainly filled the gaps.

Published on: 26th January 2016

4 / 5 Stars

Reviewed by: C H

Makes inserting the seal into narrower gaps easier

Published on: 22nd January 2016

4 / 5 Stars

Reviewed by: C H

Does exactly what we needed it to

Published on: 22nd January 2016

3 / 5 Stars

Reviewed by: L F

Really difficult and fiddly to fit.

Published on: 20th January 2016

5 / 5 Stars

Reviewed by: D M

Simple and easy to use

Published on: 19th January 2016

5 / 5 Stars

Reviewed by: D M

Simple and very effective

Published on: 19th January 2016

4 / 5 Stars

Reviewed by: C B

Easy to use tool

Published on: 19th January 2016

4 / 5 Stars

Reviewed by: C B

Economical and easy to use system

Published on: 19th January 2016

4 / 5 Stars

Reviewed by: R H

Efficient tool to insert the seal, but slightly painful after extended use.

Published on: 17th January 2016

5 / 5 Stars

Reviewed by: R H

Excellent product that reduced draughts from my old sash windows enormously, making a difference to my life and heating bill.

Published on: 17th January 2016

4 / 5 Stars

Reviewed by: D P

Very useful tool

Published on: 13th January 2016

4 / 5 Stars

Reviewed by: D P

Very easy to use and noticed a difference after.

Published on: 13th January 2016

4 / 5 Stars

Reviewed by: S D

Fiddly to use but did the job once I got the hang of it.

Published on: 12th January 2016

5 / 5 Stars

Reviewed by: S D

Good temporary fix for drafty sash windows.

Published on: 12th January 2016

4 / 5 Stars

Reviewed by: A S

Helpful gadget

Published on: 12th January 2016

3 / 5 Stars

Reviewed by: A S

Not so easy to install

Published on: 12th January 2016

4 / 5 Stars

Reviewed by: V W

Good tool for the job

Published on: 11th January 2016

4 / 5 Stars

Reviewed by: V W

So far this seems to work better than anything else I've tried.

Published on: 11th January 2016

4 / 5 Stars

Reviewed by: P S

A useful tool to assist with installation

Published on: 8th January 2016

5 / 5 Stars

Reviewed by: P S

Easy to install a effective performance

Published on: 8th January 2016

4 / 5 Stars

Reviewed by: A L

Not so easy to fit unless gap is wide

Published on: 18th December 2015

4 / 5 Stars

Reviewed by: P T

This works well to install the seal.

Published on: 14th December 2015

4 / 5 Stars

Reviewed by: P T

Good for larger gaps

Published on: 14th December 2015

3 / 5 Stars

Reviewed by: M F

Does the job fine although uncomfortable to hold when pushing the seal into tight gaps

Published on: 1st December 2015

5 / 5 Stars

Reviewed by: M F

Just the ticket for our rattling windows

Published on: 1st December 2015

3 / 5 Stars

Reviewed by: C M

Good

Published on: 20th November 2015

4 / 5 Stars

Reviewed by: C M

Good but a bit tricky to fit

Published on: 20th November 2015

4 / 5 Stars

Reviewed by: P S

Useful, does the job.

Published on: 10th November 2015

5 / 5 Stars

Reviewed by: P S

Easy to install, no more rattling and drafty sashes

Published on: 10th November 2015

3 / 5 Stars

Reviewed by: M D

Good for some gaps , no use on others!

Published on: 7th November 2015

5 / 5 Stars

Reviewed by: S A

Well designed product and pleasure to use.

Published on: 3rd November 2015

5 / 5 Stars

Reviewed by: S A

Very impressed with product, easy to use and very effective.

Published on: 3rd November 2015

4 / 5 Stars

Reviewed by: j g

Easy to use

Published on: 2nd November 2015

4 / 5 Stars

Reviewed by: j g

Very effective and simple to use. It works.

Published on: 2nd November 2015

5 / 5 Stars

Reviewed by: S A

Simple and effective, easy to use.

Published on: 30th October 2015

5 / 5 Stars

Reviewed by: S A

Very good product

Published on: 30th October 2015

4 / 5 Stars

Reviewed by: J G

Did what it was supposed to do

Published on: 13th July 2015

5 / 5 Stars

Reviewed by: J G

Very easy to fit, and very effective

Published on: 13th July 2015

5 / 5 Stars

Reviewed by: P M

Absolutely superb, excellent product.

Published on: 7th December 2013

5 / 5 Stars

Reviewed by: G M

Excellent and extremely cost-effective solution. Very pleased with the results. Delighted to have found this product and company and would highly recommend to others.

Published on: 1st December 2013

4 / 5 Stars

Reviewed by: J C

I didn't need 10 metres. I would have liked an option to buy a shorter length, at a more cost effective price.

Published on: 17th November 2013

4 / 5 Stars

Reviewed by: S Q

Delivery instructions for when no one at home were not followed and had to go collect from post office. Otherwise no problems.

Published on: 27th January 2013

4 / 5 Stars

Reviewed by: P C

Gapseal works very well. Was quite hard work to install... Easy where the gaps were larger but more difficult on the very thin gaps. Insertion into corners would have been easier with a second insertion tool.

Published on: 10th December 2012

5 / 5 Stars

Reviewed by: L H

Great product, Great Price, Easy to fit - Buying more for rest of old Victorian School Conversion .

Published on: 13th November 2012

5 / 5 Stars

Reviewed by: M C

Very happy with the results though it was quite hard work stretching the Gapseal to fit the thinner gaps. Maybe you produce a 4mm version that could be stretched easier for the thinner gaps?

Published on: 7th November 2012

5 / 5 Stars

Reviewed by: M F

I am DELIGHTED with your product. Cant fault it.

Published on: 25th September 2012

Show All Reviews

Buy Gapseal Now

Gapseal 10m Pack

Suitable for 2 - 7mm gaps

13.99 inc VAT

11.66 ex VAT

Additional Application Tool

Do I need another applicator?

2.29 inc VAT

1.91 ex VAT

Sub Total:

£0.00 inc VAT

£0.00 ex VAT

FREE Standard Delivery

All UK orders are shipped FREE of charge and delivered in 2-3 working days by Royal Mail as standard.

Please Note: Deliveries to Islands and remote locations can take an additional 1-2 days to be delivered.

Next Day Delivery

Orders can be upgraded to next working day delivery for
£4.50 inc VAT and will be delivered by UK Mail.

For delivery on order within the next
and choose next working day delivery.

International Delivery

We offer an international shipping service for customers looking to buy Gapseal from outside of the UK.

If you are intersetd in an internatinal delivery please contact our international sales team for a shipping quote.

Image Gallery

An excellent collection of images showing sash window gaps that have been sealed using Gapseal sash window gap filler.

See Full Image Gallery