0 Reviews
View Product Reviews125mu (500G) Green Vapour Barrier 4m x 50m (200m2/Roll)
Coverage required
Nationwide Delivery
Mon 6 Jan
Order within 46hrs
Delivery & Returns InfoProduct Overview
Delivery & Returns Information
All delivery charges are shown in your basket and are dependent on the total value of items in your basket based on product category.
This charge is based on delivery to mainland UK excluding the following postcodes: AB, DD, KW, IV, LD, LL, PH, SA and SY. If your delivery address is in any of these postcode areas a member of our customer service team will contact you prior to processing your order should an additional delivery charge apply. We do not offer deliveries outside the UK mainland.
Standard (Nationwide) Delivery
Insulation, Plasterboard and Drylining Products | ||
---|---|---|
ORDER VALUE | DELIVERY CHARGE | |
Under £150 | £50 ex. VAT | |
Between £150 - £400 ex. VAT | £35 ex. VAT | |
Over £400 ex. VAT | FREE | |
Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | ||
ORDER VALUE | DELIVERY CHARGE | |
Under £100 | £25 ex. VAT | |
Between £100 - £250 ex. VAT | £20 ex. VAT | |
Over £250 ex. VAT | FREE | |
SuperFOIL and YBS products | ||
ORDER VALUE | DELIVERY CHARGE | |
Each item | £10 ex. VAT | |
Over £350 ex. VAT of 1 brand | FREE | |
Paving Stone Products | ||
DELIVERY CHARGE | ||
FREE | ||
Screws & Fixings and Adhesives & Sealants | ||
ORDER VALUE | DELIVERY CHARGE | |
Under £100 | £7.50 ex. VAT | |
Over £100 ex. VAT | FREE | |
Thermafleece CosyWool Roll & SupaSoft Insulation | ||
QUANTITY | DELIVERY CHARGE | |
1 | £30 ex. VAT | |
2 | £60 ex. VAT | |
3 to 12 | £70 ex. VAT | |
13 to 24 | £140 ex. VAT | |
25 to 36 | £210 ex. VAT | |
37 to 48 | £280 ex. VAT | |
49 to 60 | £350 ex. VAT | |
61+ | £420 ex. VAT | |
Thermafleece CosyWool Slab, Thermafleece UltraWool & Thermafleece NatraHemp | ||
QUANTITY | DELIVERY CHARGE | |
1 | £30 ex. VAT | |
2 | £60 ex. VAT | |
3 to 4 | £70 ex. VAT | |
5 to 8 | £140 ex. VAT | |
9 to 12 | £210 ex. VAT | |
13 to 16 | £280 ex. VAT | |
17 to 20 | £350 ex. VAT | |
21+ | £420 ex. VAT | |
Block Pavers | ||
ORDER VALUE | DELIVERY CHARGE | |
Under £100 | £17.50 ex. VAT | |
Between £100 - £200 ex. VAT | £30.50 ex. VAT | |
Between £200 - £900 ex. VAT | £105 ex. VAT | |
Over £900 ex. VAT | FREE | |
Artificial Grass | ||
ORDER VALUE | DELIVERY CHARGE | |
Under £100 | £12 ex. VAT | |
Between £100 - £200 ex. VAT | £16.50 ex. VAT | |
Over £200 ex. VAT | £22 ex. VAT | |
Doors and Feature Panelling | ||
QUANTITY | DELIVERY CHARGE | |
1 to 2 | £35 ex. VAT | |
3 to 4 | £45 ex. VAT | |
5+ | £60 ex. VAT | |
* Deliveries of Doors and Panels to Scotland may incur additional costs and may have an extended delivery time of an additional 3 working days. Delivery to the postcodes below will be charged an additional delivery fee. Our customer service team will reach out to you if you order requires an additional delivery charge. This will be calculated based on the difference between the standard cost charged and the total cost outlined below:
Postcodes: KA1-29, IV1-39, AB, PH1-41, DD, PA1-19, KY, FK, FK15-21 - £90 ex VAT (total delivery cost) |
||
Ironmongery | ||
DELIVERY CHARGE | ||
1+ | £16.50 ex. VAT |
Express Delivery
Express Delivery - Insulation and Plasterboard & Drylining | |
---|---|
ORDER VALUE | DELIVERY CHARGE |
Under £400 | £50 ex. VAT |
Over £400 ex. VAT | £35 ex. VAT |
Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
ORDER VALUE | DELIVERY CHARGE |
Under £300 | £50 ex. VAT |
Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{air}} Prevents condensation within the building structure
- {{remove_moderator}} Helps to prevent mould and damp staining
Technical Specification
Gauge: | 500 |
---|---|
Thickness: | 125mu |
Width: | 4m |
Length: | 50m |
Sales Unit: | Roll |
Sales Unit Coverage: | 200m2 |
Technical Downloads
What is 125mu (500G) Green Vapour Barrier 4m x 50m?
125mu (500G) Green Vapour Barrier (4m x 50m) is a highly effective vapour barrier designed to control moisture and enhance the thermal performance of building structures. Constructed from durable polyethylene (PE) or similar polymer materials, this vapour barrier serves as an essential component in preventing the infiltration of water vapour into the building envelope, thereby safeguarding the integrity of the structure and its associated materials.
Its primary function is to mitigate the risks associated with interstitial condensation, mould, damp, and the degradation of insulation materials, all of which can compromise the energy efficiency and overall durability of a building.
Where Should a Vapour Barrier Be Placed?
The placement of a vapour barrier within a building is critical to its effectiveness. Unlike a breathable membrane (which tends to be fixed on the cold side of insulation), a vapour barrier is positioned on the warm side of the insulation, which is generally the interior side of walls, floors, and ceilings.
This strategic positioning prevents warm, moisture-laden air from coming into direct contact with cooler surfaces, where it could condense, potentially causing damage to building materials and compromising thermal performance.
Essentially, vapour barriers act as a physical barrier, restricting the movement of water vapour into the colder parts of the building fabric. This helps reduce the likelihood of condensation within the structure, which could otherwise lead to rot, mould growth, and other forms of material degradation.
125mu (500G) Green Vapour Barrier Benefits
- Prevention of Interstitial Condensation: The barrier effectively limits the passage of warm, moist air into the building fabric, thereby mitigating the formation of condensation within the structure. This is particularly important in maintaining the integrity of the insulation material and the overall building structure.
- Moisture Control: By restricting the movement of water vapour, the vapour barrier prevents the buildup of excess moisture in the building, which could otherwise lead to issues such as mould growth, damp staining, and degradation of building materials.
- Enhanced Energy Efficiency: As a key component in reducing heat loss and improving thermal performance, the vapour barrier helps maintain the effectiveness of insulation materials, ensuring that the building remains energy-efficient and cost-effective in both warm and cold climates.
125mu (500G) Green Vapour Barrier Specifications
- Vapour resistance of 266 MNs/g
- 500gauge/125Mu
Is a Vapour Barrier Really Necessary?
A vapour barrier is a critical component in maintaining a building's structural integrity and energy efficiency. Water vapour is an inherent byproduct of human activities such as cooking, bathing, and even breathing.
If left unchecked, this moisture can migrate through the building envelope, leading to interstitial condensation within walls, roofs, and floors. This form of condensation can significantly degrade the performance of insulation, reducing its ability to resist heat loss and thereby impacting the overall thermal performance of the building.
Moreover, excess moisture in the structure increases the risk of mould and damp issues, which can lead to poor indoor air quality and potential health concerns for occupants.
Vapour Barriers Vs Vapour Control Layers
Vapour control layers are designed to 'control' and slow moisture penetration, as opposed to blocking it completely. A vapour control layer (otherwise known as a vapour retarder) is airtight in its design and because of this is typically employed in areas where airtightness is a concern, with some common forms incorporating a self-adhesive design. When utilised in a roof space, VCL is usually employed alongside a breather membrane to stimulate air flow.
Vapour barriers, on the other hand, serve as an 'air barrier' that fully obstructs the movement of vapour and air. The most common form of vapour barriers are polythene sheets or foil-backed insulation with taped joints.