THE SOUNDPROOF WINDOWS OVERVIEW OF GUARANTEES
At The Soundproof Windows we have conducted extensive research and development in order to create beautiful, enduring products that combine detailed design with high quality materials and cutting-edge technologies.
As windows and doors are designed to withstand daily use, inclement weather and other effects, we have worked hard to ensure that all of our products are long-lasting and will provide you with an exemplary performance for years to come.
Backed by the Buy with Confidence scheme and the Consumer Protection Association, we have gone out of our way to make sure you, as the customer, are as protected as possible when making a purchase. The following outlines in detail what is and isn’t covered by our guarantees, and how long these guarantees last dependent upon certain critical factors.
We’ve tried to make this page as simple as possible so you don’t get caught out by any small print, but if you have any questions or need something clarified, don’t hesitate to get in touch with us!
10 Years
Paint Finish
Manufacturer’s guarantee against paint coating system failure.
7 Years
Stain Finish
Manufacturer’s guarantee against stain coating system failure.
30 Years
Preservative
Manufacturer’s guarantee against preservative failure.
10 Years
Glazing Unit
Manufacturer backed guarantee for all drained and vented glazing units.
10 Years
Hardware
Manufacturer’s guarantee for all window and door hardware.
10 Years
Weather Seals
Manufacturer’s guarantee against failure of weather seals.
Home Maintenance
Our products are guaranteed for up to 10 years providing that they are maintained annually. How you can do this is explained in our maintenance guide, which you can find here. Don’t worry, it’s not a lot of work, and with just some simple maintenance measures you can make sure that your products are kept in perfect condition for years to come.
Coating Guarantees
When it comes to timber, coatings can significantly affect the strength and durability of the final product. This is because timber is a natural product and needs to breathe in order to prevent moisture building up, which can cause the frame to swell and decay.
We combat these problems by ensuring that our timber is optimally dehydrated before applying our coatings in a humidity controlled environment. This allows us to not only increase the life expectancy of the product, but really bring out the beauty of the wood itself.
Our standard coating guarantees:
10 Years
For Paint Finish
7 Years
For Stain Finish
Unfortunately, climate and exposure will significantly affect the rate at which these coatings weather. This means that those living in high altitude areas, by the coast, or with exposed windows (i.e. extending out from the brickwork) will have a different guarantee length as outlined below:
| Exposure | Moderate Climate | Hard Climate | Extreme Climate |
|---|---|---|---|
| Non-coastal areas at low altitude. | Areas within five miles of a coastline or/and chemical pollution in the atmosphere (e.g. by the main road). | Areas of high altitude, such as Snowdonia or exposed coastal areas. | |
| Sheltered: The windows/doors are sat beneath a porch or large roof overhang. | 10 Years for Paint Finish; 7 Years for Stain Finish | 7 Years for Paint Finish; 3 Years for Stain Finish | 5 Years for Paint Finish; 3 Years for Stain Finish |
| Partly Sheltered: The windows/doors are built back in a reveal (more than 200mm). | 7 Years for Paint Finish; 4 Years for Stain Finish | 5 Years for Paint Finish; 3 Years for Stain Finish | 5 Years for Paint Finish; 3 Years for Stain Finish |
| Not Sheltered: The windows/doors are positioned on the face of the building. | 5 Years for Paint Finish; 3 Years for Stain Finish | 4 Years for Paint Finish; 2 Years for Stain Finish | 3 Years for Paint Finish; 1 Year for Stain Finish |
Summary of coating guarantee details:
The following issues are covered as standard by our guarantee:
- Damage resulting from fungal growth within the timber.
- Embrittlement, flaking or cracking of the coating.
- Premature degradation of the coating which exposes the undercoat.
- Pronounced yellowing of the coating.
Relating to preservatives:
- Damage as a result of soft rot or blue stain fungus inside of the timber.
The following are NOT covered by our guarantee:
- Damage caused by impact and/or abrasion on the coating.
- A release of resin from the timber coming through the coating and extractive staining of knots.*
- Issues as a consequence of incorrectly installing supply-only products, including windows and doors incorrectly installed by third party installers (construction companies, etc.).
- Issues arising as a consequence of not following proper maintenance recommendations as outlined in our maintenance guide, or from other poor maintenance practices.
- Problems resulting from the usage of incorrect cleaners or excessive cleaning of the product.
- Variation of wood shades and any natural colour changes of wood stain coatings caused by sunlight – varnish coatings.
- The exudation of resin
- Extractive staining around knots.
Relating to preservatives:
- Damage resulting from an insect infestation.
- Issues arising as a consequence of not following our maintenance guide.
*It is very unusual for these issues to be a problem. However, if they do occur then details of how to fix these are included in the Coating Maintenance section of the Owner’s Manual.
Glazing Unit Guarantee
The acoustic effectiveness of both our windows and doors relies heavily upon the glazing that we employ, which is why we only use top-of-the-line acoustic glazing that not only reduces noise pollution, but also boosts the thermal performance of your property.
All of our glazing is back by a ten year guarantee. The guarantee covers the supply and fit of a replacement glazing unit within ninety days (90) of installation and then the supply of the glazing unit only for the remainder of the guarantee term. In the case of supply-only products, we only offer the resupply of faulty units, not the replacement or reinstallation.
Cracks in glass that appear after installation are not automatically covered under warranty. Where cracking results from thermal stress, impact, building movement, or environmental factors, replacement glazing will be chargeable.
Summary of glazing guarantee details:
The following issues are covered as standard by our guarantee:
- Any failure of the perimeter seal.
- Any failures as a consequence of a manufacturing fault.
- Scratches in accordance with GGF (Glass and Glazing Federation).
The following are NOT covered by our guarantee:
- Any failure as a consequence of incorrect specification. This means, if you did not inform us of factors such as heat and wind, which will affect the glass, during initial planning and consultations.
- Issues as a consequence of incorrectly installing supply-only products, including windows and doors incorrectly installed by third party installers (construction companies, etc.).
- Issues arising as a consequence of not following proper maintenance recommendations as outlined in our maintenance guide, or from other poor maintenance practices.
- Any accidental damage (including glass breakage).
- Failure of product caused by heat trapped on the glass surface, whether resulting from coveringthe glass with paper, paint or reflective-type covers, or any other cause.
External Putty
Glazing units that have an external putty glazing system (i.e. those that have a low profile edge seal and/or contain single glazing) have a different guarantee. Although we utilise modern materials to improve longevity, the perimeter seal’s performance can be affected by the use of external putties. As such, all products fitted with a putty glazing system only come with a five year guarantee on the glazing unit. This covers both supply and fit.
Hardware Guarantees
All of the hardware installed along with our windows and doors has been selected for its complementary high quality and performance.
These elements are all covered by our ten year hardware guarantee, which covers the supply and fit of any replacements within the first year of installation, then supply only for the remainder of the guarantee term. The ten-year weather seals guarantee is for supply only and covers all aspects of operational failure.
Summary of hardware guarantee details:
The following issues are covered as standard by our guarantee:
- Operational failure as a consequence of a mechanical fault.
The following are NOT covered by our guarantee:
- Surface damage such as scratches.
- Damage caused by wear and tear.
- Issues resulting from the improper installation of our hardware by anyone other than our installation team.
- Issues arising as a consequence of not following proper maintenance recommendations as outlined in our maintenance guide, or from other poor maintenance practices.
Choosing The Right Hardware
It is imperative that you take into consideration your property’s environment when choosing what hardware to install in your home. This is because these products can be affected by elemental factors, and must, for instance, be kept clean and free of corrosive substances. All recommendations for cleaning any hardware can be found in our maintenance guide.
Warranty Exclusions & Warnings
The following are not covered by this warranty:
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Damage to weather seals caused by paint, stains, chemicals, pollution or other misuse.
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Rare or non-standard ironmongery, custom finishes, or items specified outside of our standard product range.
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Damage to factory-applied coatings caused by abrasion, chemicals, impact, cleaning methods, or failure to maintain.
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Damage or deterioration caused by excessive moisture exposure (for example pool rooms, leaking pipes, defective guttering, or persistent condensation not addressed by the homeowner).
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Damage caused by contact with other building materials such as cement, plaster, or mortar.
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Products that have been improperly installed, handled, transported, or stored by third parties.
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Products which have been altered, modified, or adjusted after leaving our factory.
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Damage caused by the use of high-pressure cleaning equipment or aggressive cleaning methods.
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Damage caused by external events beyond our control, such as fire, flooding, subsidence, burglary, vandalism, or natural disasters.
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Installation & Use Conditions
Failure to follow these conditions will invalidate the warranty:
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Morticing or cutting through joints for ironmongery must not be carried out, as this impairs structural performance.
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Overhead closers or closers requiring excessive timber removal are not recommended.
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Doors must not be wedged or forced against closer pressure.
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Dark colours must be avoided in exposed locations as these absorb heat and increase risk of bowing/twisting.
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All products must be installed by The Soundproof Ltd or another FENSA registered installer.
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Validity & Payment Conditions
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The warranty becomes valid only once all products have been paid for in full.
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Any unauthorised repairs, adjustments, or attempts to modify components will automatically invalidate the warranty.
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There are no third-party rights until full payment is received.
10 YEAR INSURANCE BACKED GUARANTEE
All of our products come with up to a 10 Year Insurance Backed Guarantee provided by the Consumer Protection Association. So you can rest assured that your home is in safe hands.
We have been Trading Standards Approved and are proud to be enrolled on the Buy With Confidence Scheme, ensuring customers just like you have their interests protected.
TRUSTMARK REGISTERED FOR QUALITY
Consumers can feel confident using a TrustMark registered business, as the government-endorsed scheme ensures high quality service and a range of consumer protection options.
AWARD-WINNING PRODUCTS & INSTALLATION
Following awards in 2020, and 2021, The Soundproof Windows was announced as the ‘Best Acoustic Window & Door Installation Company – London’ at the SME News Awards 2022.



