Gorilla Mould Resistant Sealant is a versatile, 100% waterproof sealant designed for long-lasting sealing jobs around the home, both indoors and outdoors.

Ideal for bathrooms, showers and other areas exposed to moisture, the sealant is mould and mildew resistant and forms a flexible, durable seal that is designed not to yellow, shrink or crack over time.

Its fast water-ready performance means the cured application can be exposed to shower water or rain in as little as 30 minutes, making it particularly convenient for repairs and sealing jobs where long waiting times are undesirable.

Gorilla Mould Resistant Sealant is available in White and Clear, allowing you to choose either a clean white finish or a discreet transparent seal depending on the project.

For anyone searching for Gorilla sealant, mould resistant sealant, waterproof bathroom sealant, shower sealant, clear silicone sealant, white bathroom sealant, mildew resistant sealant or indoor outdoor sealant, Gorilla Mould Resistant Sealant provides a durable solution for wet and demanding environments.

Key Benefits

• Gorilla multi-use sealant

• 100% waterproof

• Mould resistant

• Mildew resistant

• Water ready in just 30 minutes

• Can be exposed to shower water after 30 minutes

• Can be exposed to rain after 30 minutes

• Flexible seal

• Designed not to yellow over time

• Designed not to shrink

• Designed not to crack

• Suitable for indoor use

• Suitable for outdoor use

• Ideal for wet areas

• Suitable for household sealing projects

• Available in White

• Available in Clear

• Ideal for bathroom and shower applications

100% Waterproof Sealant

Gorilla Mould Resistant Sealant creates a 100% waterproof seal, making it ideal for areas that regularly encounter water and moisture.

This makes it particularly useful for suitable sealing applications in bathrooms, showers and other wet environments, as well as exterior projects exposed to rain.

Mould & Mildew Resistant

Bathrooms and other humid areas can provide ideal conditions for mould and mildew growth.

Gorilla Mould Resistant Sealant is specifically designed to be resistant to mould and mildew, helping maintain a cleaner-looking seal in moisture-prone areas.

This makes it particularly well suited to applications around showers and other suitable wet areas.

Water Ready in 30 Minutes

One of the standout advantages of Gorilla Mould Resistant Sealant is its fast water-ready performance.

The sealant can be exposed to shower water or rain in as little as 30 minutes after application, subject to the manufacturer's application conditions.

This helps reduce downtime compared with sealants that require extended periods before exposure to water.

Flexible Seal

A good household sealant needs to accommodate normal movement between adjoining materials.

Gorilla Mould Resistant Sealant remains flexible, helping maintain the integrity of the seal as compatible surfaces experience normal movement and environmental changes.

Won't Yellow

Gorilla Mould Resistant Sealant is formulated to resist yellowing over time, helping the finished seal maintain a cleaner appearance.

This is particularly beneficial for visible applications where the appearance of the sealant is important.

Won't Shrink or Crack

Poor-quality sealants can shrink as they age, potentially creating gaps where water can penetrate.

Gorilla Mould Resistant Sealant is designed not to shrink or crack over time, providing a durable and long-lasting seal when correctly applied to compatible surfaces.

Bathroom & Shower Sealant

With its combination of 100% waterproof performance, mould resistance and rapid 30-minute water readiness, Gorilla Mould Resistant Sealant is an excellent option for compatible bathroom and shower sealing projects.

Potential applications include suitable joints and gaps around:

• Showers

• Bathroom fixtures

• Wet areas

• Splash-prone surfaces

• Other compatible household joints

Always confirm suitability for the specific material and application before use.

Indoor & Outdoor Sealant

Gorilla Mould Resistant Sealant isn't limited to bathrooms.

It is designed for multi-purpose indoor and outdoor use, providing a flexible waterproof seal for a broad variety of compatible household applications.

Its ability to withstand rain after just 30 minutes also makes it particularly convenient for exterior repairs where weather conditions may be a concern.

Available in White & Clear

Gorilla Mould Resistant Sealant is available in two useful finishes:

White – ideal where a clean, opaque white seal is preferred.

Clear – ideal where a discreet, transparent seal is required and you want the surrounding surfaces to remain visible.

Choosing the appropriate finish can help create a cleaner and more professional-looking completed project.

Suitable for Larger Gaps

For gaps larger than 12mm, Gorilla recommends using a suitable backer rod to fill and support the gap before applying the sealant.

Using a backer rod helps create the appropriate joint depth and provides support for the sealant in wider gaps.

Surface Preparation

Correct surface preparation is essential for achieving a strong, durable seal.

Before applying Gorilla Mould Resistant Sealant:

• Remove old sealant where required

• Remove loose dirt

• Remove grease

• Remove oil

• Ensure the bonding surfaces are appropriately clean

• Prepare the joint according to Gorilla's instructions

Applying new sealant over contamination or deteriorated old sealant can compromise adhesion and the finished result.

Application Temperature

For best results, Gorilla recommends applying the sealant at temperatures above 5°C.

Temperature can affect application and curing performance, so always check the manufacturer's instructions when working in cold conditions.

How to Use

• Remove all old or unsuitable sealant from the joint.

• Ensure the surfaces are clean and free from dirt, grease and oil.

• Check that the materials are compatible with Gorilla Mould Resistant Sealant.

• For gaps larger than 12mm, install an appropriate backer rod before applying the sealant.

• For best results, apply at temperatures above 5°C.

• Apply an even bead of sealant along the joint.

• Tool and finish the bead according to Gorilla's instructions.

• Remove unwanted excess sealant using the recommended method.

• Allow the sealant to develop according to the manufacturer's directions.

• The seal can be exposed to shower water or rain in as little as 30 minutes under the specified application conditions.

• Always follow Gorilla's complete application, curing and safety instructions.

Gorilla Mould Resistant Sealant vs Standard Sealant

A standard general-purpose sealant may provide basic gap sealing but may not offer the same combination of features required for moisture-prone environments.

Gorilla Mould Resistant Sealant provides:

• 100% waterproof performance

• Mould and mildew resistance

• 30-minute water readiness

• Flexible performance

• Resistance to yellowing

• Resistance to shrinking

• Resistance to cracking

• Indoor and outdoor versatility

This makes it particularly useful for demanding household sealing jobs where durability and moisture resistance are important.

Ideal For

• Bathrooms

• Showers

• Wet areas

• Household sealing

• Indoor joints

• Compatible outdoor joints

• Moisture-prone areas

• Rain-exposed applications

• Home repairs

• DIY projects

• Maintenance work

• White sealing applications

• Clear sealing applications

• Gaps requiring a flexible waterproof seal

Product Information

Brand: Gorilla
Product: Mould Resistant Sealant
Type: Multi-purpose waterproof sealant
Available Colours: White & Clear
Waterproof: 100%
Mould Resistant: Yes
Mildew Resistant: Yes
Flexible: Yes
Water Ready: As little as 30 minutes
Shower Water Exposure: After approximately 30 minutes under specified conditions
Rain Exposure: After approximately 30 minutes under specified conditions
Yellow Resistant: Yes
Shrink Resistant: Yes
Crack Resistant: Yes
Indoor Use: Yes
Outdoor Use: Yes
Recommended Application Temperature: Above 5°C for best results
Backer Rod: Recommended for gaps larger than 12mm
Primary Use: Flexible, waterproof and mould-resistant sealing for compatible indoor and outdoor household applications

WEEE Recycling Producer Registration Number:12889

How do I return my old product to be recycled?

You can return your old product to MyDIY. Waste Electrical and Electronic Equipment (WEEE) is taken back free of charge on a one-for-one, like-for-like basis. Waste batteries including rechargeable batteries are taken back free of charge. You are not obliged to make any purchase when returning old batteries. Each local authority must also accept household WEEE and small batteries free of charge at its recycling facilities. All WEEE and waste batteries must be recycled and should not be placed in any of your household wheelie bins. Make sure you always recycle all your old electrical goods and batteries.

What products can I recycle for free?

You can return anything that is electricaly powered or battery powered. Even your old bicycle lamps can be recycled!.

Do you take back used batteries?

Yes we do. The batteries that we accept are AA, AAA, C or D, powertool batterys and also the flat batteries that are found in watches and toys. Unfortunately we do not accept back any Industrial or car batteries.

Do I need to have made a purchase at MyDIY.ie?

No you don't. You can recycle any of the above items at our store in Inchicore Dublin 8, even if you have not made a purchase with us.

Will you collect my old product?

Yes, but we must be notafied within 14 days of purchase date. You can still arrange to have your old appliance recycled free of charge. Simply bring it back to our Inchicore store and we will ensure that it is disposed of in an environmentally friendly manner.

How much will it cost?

There is no charge to return products to any of our warehouses.

Why should I recycle with MyDIY?

We will ensure that your old product is disposed of correctly to reduce the potentially harmful effects caused on the environment and to conserve natural resources. Further information can be found on weeeireland.ie.

EMC (Environmental Management Cost) Included in the purchase price. 

Gas discharge lamps, LFLs and CFLs €0.15

LED lamps and luminaires €0.05

Large appliances €5.00

Information

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Each product on our website is marked with an estimated delivery time. If you order multiple items, your order will arrive based on the item with the longest delivery time. For example, if you buy two next-day items and one 3-day item, the entire order will arrive in 3 days.

While most products arrive in 1-2 days, we offer over 44,000 items, so please allow 4-5 working days for some deliveries. Need it faster? Call us at 01-446692, and we'll do our best to help.

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• FREE delivery for orders over €150 within Ireland.

• Orders under €150: €8.99 delivery fee.

• International delivery: Charges based on weight—contact us for a quote.

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• Most orders ship on a 24-hour courier service (2 working days).

• Larger orders may take 4-5 days, and pallet deliveries require scheduling.

• Orders placed before 2 PM usually ship within 24 hours.

• Orders after 1:30 PM Friday or on weekends ship the following week.

• Busy holiday periods may cause slight delays beyond our control.

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Yes, someone must sign for deliveries due to item value. If you're not home, DPD will leave a card with re-delivery or collection instructions. After two failed attempts, your order may be returned to us, and a re-delivery fee may apply.

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We ship to Europe and worldwide, with charges based on weight. Liquid products cannot be shipped internationally due to regulations. Contact us for a quote—we're happy to help!

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