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Local and County Sligo orders made before 12.00 pm Wednesday 21st December will be delivered before 1.00 pm on Friday 23rd December. All nationwide orders made before midnight on Monday 19th December will be dispatched prior to Christmas. All orders made after that will be processed from 3rd January onwards. Happy Christmas!

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Airtight Sealant Gerband Fortax 6400 (310ml)

9.65 (Inc. VAT)

Delivery time: 2-3 days
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Airtight Sealant for air tightness layers

Key features:

  • High quality sealant used for connecting air tightness layers permanently
  • Also suitable for connecting all types of standard vapour barriers
  • For internal use
  • 310ml cartridge and compatible with standard application gun
  • Ideal for Trades people and for DIY

40 in stock

Product Description

This airtight sealant from Gerband is the Fortax 6400 cartridge which is 310ml. It is a high quality sealant used for connecting air tightness layers permanently and is for internal use only. It is also suitable for connecting all standard vapour barriers and is an excellent permanent bonding solution. It is solvent free and includes no environmental or indoor toxins.

Key features:

  • High quality sealant used for connecting air tightness layers permanently
  • Also suitable for connecting all types of standard vapour barriers
  • For internal use
  • 310ml cartridge and compatible with standard application gun
  • Ideal for Trades people and for DIY

Technical information:

  • Raw material base: polymer dispersion
  • Color: light blue
  • Consistency: pasty-elastic
  • Application temperature: 5C to 40C, frost free
  • Storage: 5C to 25C, frost free
  • Shelf life: 12 months in unopened cartridge / sausage
  • Ecology: no environmental or indoor toxins, solvent-free

How to use it:

Preparation of the application surface:
The substrates for the FORTAX 6400 adhesive sealing must be clean and dry. Impurities such as dust, grease, oil, tar, bitumen and release agents like as surfactants and silicones must be removed. Sandy and rough surfaces may need to be pre-treated with the Gerband Primer 6300.

Apply the FORTAX® 6400 adhesive sealant with an 8mm thick bead on the fixed surface. Increase the sealant thickness where the surface is uneven.

In case of wet application:
If ‘wet bonding’, the air-tightness-layer must be gently press down according to the DIN 4108-7 with a relief loop so that a 3-4 mm thick an adhesive seal layer is maintained.

In case of dry application:
After a short drying time, pressure is required to ensure a strong bond to the airtightness layer.

Bonding of the airtightness layer:

  • The air-tightness-layer must be stress-free and fastened.
  • Check that completed connections are secure.

In the world of construction, DIY projects, and even everyday household maintenance, the importance of airtightness cannot be overstated. Airtight sealants are valuable tools that play a significant role in maintaining energy efficiency, preventing moisture intrusion, and enhancing the overall durability of structures.

Benefits of Airtight Sealants

  1. Energy Efficiency: One of the primary benefits of using airtight sealants is their ability to improve energy efficiency. By sealing gaps, cracks, and joints in buildings, these sealants prevent air leakage. This minimizes the exchange of indoor and outdoor air, leading to reduced heating and cooling costs. Airtightness helps maintain a consistent indoor temperature, easing the workload on heating, ventilation, and air conditioning (HVAC) systems.
  2. Moisture Control: Airtight sealants act as barriers against moisture infiltration. Uncontrolled moisture can lead to the growth of mold and mildew, compromising indoor air quality and the structural integrity of the building. Sealants prevent water vapor from entering wall cavities and other vulnerable areas, reducing the risk of rot and degradation.
  3. Improved Indoor Air Quality: When a building is airtight, it becomes easier to control indoor air quality. By sealing gaps and cracks, you can minimize the entry of pollutants, allergens, and outdoor contaminants into your living or working space. This is particularly crucial for individuals with respiratory conditions or allergies.
  4. Enhanced Comfort: An airtight building provides better thermal comfort, as there are fewer drafts and cold spots. This contributes to a more pleasant and consistent living environment, making spaces feel cozy during winter and comfortably cool during summer.
  5. Longevity of Structures: Airtight sealants play a vital role in maintaining the structural integrity of buildings. By preventing the intrusion of moisture and air, they help protect the building envelope, reducing the risk of decay, rust, and deterioration over time.

How to Use Airtight Sealants

  1. Surface Preparation: Before applying sealant, ensure that the surfaces to be sealed are clean, dry, and free of debris, dust, and oil. Clean the area thoroughly using appropriate cleaning agents and allow it to dry completely.
  2. Choose the Right Sealant: Select a sealant that is suitable for the specific application. There are various types of sealants available, such as silicone, acrylic, polyurethane, and more. Consider factors like flexibility, adhesion, and compatibility with the materials you’re working with.
  3. Application Technique: Load the chosen sealant into a caulking gun and cut the nozzle at an angle to create an appropriate-sized opening. Apply a continuous bead of sealant along the gap, crack, or joint that needs sealing. Make sure the sealant fully covers the area to create an effective barrier.
  4. Tooling and Smoothing: To ensure proper adhesion and a neat appearance, use a tool like a caulking spatula or your finger to smooth and spread the sealant evenly. This process also helps eliminate air pockets and ensures a tight seal.
  5. Curing Time: Different sealants have varying curing times. Follow the manufacturer’s instructions regarding the curing time before exposing the sealed area to moisture or stress.
  6. Regular Maintenance: While airtight sealants offer long-lasting protection, it’s essential to periodically inspect and maintain sealed areas. Address any signs of deterioration or damage promptly to prevent future issues.

Airtight sealants are indispensable tools for creating energy-efficient, comfortable, and durable living and working spaces. Their ability to seal gaps, cracks, and joints effectively helps maintain indoor air quality, prevent moisture intrusion, and enhance the longevity of structures. By following proper application techniques and selecting the appropriate sealant for each situation, you can harness the benefits of airtight sealants and contribute to a more sustainable and resilient built environment.



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Delivery charge information:

You can add any and all products to the basket and calculate your delivery charges easily. Simply enter your Eir Code and all applicable charges will be calculated automatically.

  • Orders of €150 inc VAT or over will get free delivery nationwide. (Please see notes below for exceptions)
  • All orders under €150 inc VAT incur a standard delivery charge of €10 including VAT
  • (Please see below for exceptions)
  • We deliver to anywhere in Ireland.

Bulky items:

Bulky items may incur delivery surcharges (see below) as extra courier costs unfortunately are often unavoidable. If the order is over €150 only the bulk delivery charge will apply. The final delivery charge for bulky products will be calculated when all items have been added to the shopping cart.
All efforts are made to indicate where products are subject to delivery surcharges.

Special Order items:

We are in regular contact with our suppliers and we try our best to make sure that all “special order items” on our webstore are available from our suppliers within the timeframe advertised. If, for some reason our supplier is out of stock and you have ordered the product we will let you know immediately and give you the option to either wait until it’s back in, upgrade to a better model at little or no extra cost or receive a full refund. See more info on Special Order products here.


All nationwide deliveries will be delivered within 2-3 working days.

(Local deliveries within 1-2 working days.)

Special order items may take longer to deliver but this will be indicated on the product information page. You can see more info on Special Order products here.

Working days are Monday through Friday excluding public holidays. Orders placed on Saturday/Sunday will be deemed as being placed on the following Monday.

Some items may take longer to ship. If this is the case, we will notify you by phone/email of this delay.

If your delivery is urgent please contact us by phone or email and we will do our best to expedite it.

Please indicate on your order any specific delivery instructions.

Bulky goods:

Bulky goods will be delivered on pallets and will be unloaded by the courier. All bulky goods are delivered kerbside. Unfortunately, the delivery company will not convey the goods into premises for storage unless agreed in advance. Access to the delivery location must be suitable for a truck and failure to provide suitable level ground for operating pallet truck may result in refusal to deliver by the courier. Please note delivery operators will apply safe procedures in relation to ongoing Public Health considerations..

Exceptional Goods:

Some building materials are extremely bulky and not practical to deliver outside Co. Sligo e.g. concrete blocks, tonne bags of sand or gravel or some lengths of timber. We have highlighted where this is the case in bold red writing. If you do order these products we will contact you to see if you want to pay an additional delivery charge or if you wish to cancel the order. Please do not take offence to this as some bulky goods may cost much more to deliver than the value of the goods. We are based in Sligo so can offer a local delivery service in this area using our own vehicles.

If there is a forklift or teleporter available onsite, we would appreciate if you could tell us in advance by filling out the special delivery notes when completing the order.

The Seller or the courier company will not be held responsible for any damage to goods or persons caused by the goods being unloaded by the buyer.

**Please contact us in advance of ordering if unsure of the above**

Damaged goods:

Where goods are damaged on delivery the Buyer has the right to refuse delivery. Damaged goods should be photographed on delivery and photos emailed to straight away. If goods are damaged on delivery, we will replace the goods in as timely a manner as possible at no extra cost.

Once the goods are signed for it will be deemed that goods were in good state when delivered.


Delivery shall be within a time period agreed between the Buyer and Seller and the Seller shall use its best endeavours to ensure that delivery takes place within the period agreed. Failure by the Seller to deliver the Goods within the agreed time period shall not amount to a breach of this contract by the Seller and the Buyer shall not be entitled to damages or other compensation or to cancel this contact by reason of such failure.

The Seller reserves the right to deliver in instalments. Each part delivery shall be deemed to constitute a separate contract, the fulfilment or non-fulfilment of which shall not affect any other part of the contract or the contract as a whole. Where any order involves more than one delivery and default is made on payment on the due date (either under this contract or any other contract made between the Seller and the Buyer) the Seller shall have the right to suspend all further deliveries until payment is made or to terminate the contract without prejudice to any existing claim.

The Seller shall not be liable to the Buyer for any loss or damage which may be suffered by the Buyer as a direct or indirect result of the supply of the Goods by the Seller being prevented, hindered or delayed by reason of any circumstances whatsoever which are outside the control of the Seller. Once delivery has been accepted the Buyer shall not be entitled to withhold or postpone payment of all or any portion of the price agreed, therefore.

1. Where goods are damaged on delivery the Buyer has the right to refuse delivery. Damaged goods should be photographed on delivery and photos emailed to If goods are damaged on delivery, we will replace the goods in as timely a manner as possible at no extra cost.

2.  If goods are signed for and later found to be faulty/damaged, notice must be given in writing within 24 hours and photos will be required to be emailed to

3. All faulty/damaged goods issues will be dealt with on a case by case basis and best endeavours will be made to rectify within a timely manner. Manufacturers’ warranties will apply in certain cases.

4. Any returned items which are not faulty or damaged will incur full carriage costs which must be paid for by the customer.  Notice of intention to return unwanted goods must be given within 14 days of receiving goods. Returned goods must be in original packaging and in original condition before refunds can be given.

5. All returned goods to be sent to Patrick Rogers Ltd., O’Connell St., Ballymote, Co. Sligo

Note regarding Oil Boilers and Boiler stoves:

Please ensure you check with us first or consult a qualified professional before ordering your oil boiler or boiler stove to ensure you order the correct one for your home. If the product needs to be returned a restocking fee may apply.

Returns of Special Order Items

All “special order items” are subject to the same product returns policy as stocked items. However, items which are returned that are not faulty or damaged on delivery will be subject to a 10% restocking fee.

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