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EWI-302 Deep Penetrating Primer 5l

EWI-302 Deep Penetrating Primer 5l Plastic Jerry Can
EWI-302 Deep Penetrating Primer 5l
  • EWI-302 Deep Penetrating Primer 5l
  • Substrate preparation priming paint
  • Priming external walls - approx. coverage 20m2
  • Easy and ready to use - 5 litre jerry cans
  • New build and refurbishment brick and blockwork
Estimated delivery:
In Stock
£ 60.78
Ex VAT: £ 50.65
  • Brand: EWI Pro
  • Model: EWI-302 5l
  • Weight: 5.00kg
  • Dimensions: 200mm x 150mm x 75mm
  • SKU: EWI-302 5l
  • Product code: P1-2243
  • MPN: EWI-302 5l

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EWI-302 Deep Penetrating Primer is a substrate preparation priming paint, used for priming new build external walls prior to the application of renders or mortars.

This product is suitable for stabilising various different absorptive substrates, particularly new-build brick and blockwork, ordinary/cellular concrete (e.g. aerated concrete), walls made of bricks, blocks and structural clay tiles, plaster coats, gypsum panels and gypsum plasterboards.

It is applied to the substrate prior to the application of paints, adhesives, cement or cement and lime-based plaster coats, skim finish products, ceramic tiling, floor screeds and even wallpapers.

EWI-302 comes ready to use in 5 litre jerry cans.

It is the perfect primer to use to stabilise walls on heritage buildings both internally and externally prior to the application of the render and finishing products.

The product should be mixed within its container before use.

It should not be diluted with water or any other material.




EWI-302 Deep Penetrating Primer: approx. coverage 20m2

Application: by hand using a roller

Consistency: ready-to-use product

Weight: 5kg


EWI-302 Deep Penetrating Primer Application:

 · For best results, apply using a brush or roller.

 · Each coat should take approximately 2-4 hours to dry.

 · Weak substrates that need to be strengthened and highly absorptive substrates should be re-primed after about 4 hours.

 · Dispersion paints, surface finish products or adhesives should be applied at least 24 hours after priming.

 · Works must not be carried out during rain or snow, in strong winds and in direct sunlight without special protection to limit exposure to weather conditions.

 · Recently rendered coats must be protected against rain, frost and over-rapid drying.


Substrate Preparation for EWI-302 Priming Paint:

 · Prior to priming, remove any loose elements and fragments on substrate.

 · The substrate should be cleaned to ensure that it is free from all substances that may affect adhesion, i.e. dust, oil, grease, anti-adhesive agents, remaining paint, mould, algae, moss, etc.

 · The substrate should be free of cracks and efflorescence, and uniformly dry.

 · All contamination resulting from grease, oil or anti-adhesive agents should be cleaned by washing with a water-containing detergent.

 · Biological contamination should be eliminated, and then cleaned by mechanical action.

 · Scratched and cracked surfaces should be repaired with levelling mortar or another mortar suitable for the substrate.

 · Mortar applied to repaired sites should be dry and well-bonded.

 · Surfaces that will not be primed should be protected prior to priming.


Certification and Standards:

 · PN-C-81913:1998 Dispersion paints for façade painting.

 · European Technical Approvals ETA – 15/0576 and ETA – 15/0575.

 · BBA Approval Inspection Testing Certificate 18/5503.


*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet 

Board covarage 20.00 m2
Colour Colourless
Consistancy Ready-to-use product
Material Water-based, acrylic polymers, other additives
Profile Priming Paint
Shelf Life One year from manufacture date
Application Temperature from +5 °C to +25 °C
Shipping method Rigid Vehicle ǀ Courier
Applications External Wall Insulation (EWI) systems
BBA Certified Yes (no. 18/5503)
ETA Notification Yes
Features Substrate preparation priming paint
Manufacturer EWI Pro®

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We deliver insulation materials to Mainland UK only. Deliveries to Highlands, Northern Ireland, Isle of Wight etc.. might be possible at additional cost.
We offer free delivery on most of the orders above £300 (excluding VAT) (except special products - shipping cost via courier - products marked ''Request A Quote'')

Delivery of some insulation materials might be extended due to the current situation (Covid-19, stock shortages, allocations).
If you need materials quickly please contact us - we will do our best to help you source materials needed.

We do not deliver on weekends and bank holidays. Sometimes we can deliver on Saturdays - please check with us before placing the order.
If you need any further information please contact us tel. 02081910776

We can help to calculate price per m2 or linear meter (one meter in length) cost, please just contact us via phone 02081910776, email or live chat. Alternatively, you can work it out yourself quickly and easily: to get cost per meter square please divide price shown in orange area by ''Required area (m2)'' Example price of £28.80 divided by board coverage 2.88m2 = cost of £10.00 per m2.


No matter whether you choose a local installer or a national company, there’s a few tips to help you find the right installer for your home insulation improvements, such as asking for recommendations and making sure that they’re part of a certification scheme. This makes sure that they have the right skills and standards of workmanship to carry out the installation, and you can be sure that they know exactly what they are doing.


1. Thermal inspection picture in portfolio

It’s worth seeing a installer’s previous work. There’s no harm asking if you can see any properties nearby that they’ve installed insulation in. Best way would be to see Infrared Thermal Imaging Inspections. Thermal cameras spot small, but key changes in temperature in different areas of a house, identifying problematic areas that the human eye never could and some that a visual inspection could only hypothesize.

2. Reviews

Along with checking recommendations and previous work, finding reviews online can often be a great way to find out if they provide a good service or not. However, it’s best not to solely rely on reviews you may find or review websites, as there’s no controlling who writes them.

3. Compare prices

Comparing prices will also ensure companies can’t take advantage of you and give you a fair price. 

4. Word of Mouth

The best way to find a great insulation installer is through recommendations. Make sure you ask friends and family. They will most likely give you their honest opinion and can tell you from first hand experience.


Whether you require a wall, cladding, external wall, loft or floor insulation fitted, you can find and hire your local insulation installers from popular UK web pages. A simple internet search will return thousands of potential installers near your area.



We are the stockist of construction materials and related products for both trade and DIY from most recognizable brands in the UK like Cordek, RCM, Promat, Rockwool, Isover, Celotex, Xtratherm, Ursa, Low-E, Cedral, Kingspan, Dufaylite, British Gypsum, K-rend, Ecotherm, Iko enertherm, Kay-Metzeler, Terrawool to allow you to complete your insulation job on time at competitive prices and the highest standards.


Whether you are a large company or a DIYer, if you need a large amount of insulation materials, we can offer quantity discounts at the best prices. Please contact us and our friendly customer service will try to find the best and cheapest solutions for you. We value your time and we will try to deliver the products as soon as possible at a reasonable price to your construction site or house. The UK's leading insulation supplier near you and your needs. Price List available upon request.
EWI-302 Deep Penetrating Primer 5l Plastic Jerry Can
EWI-302 Deep Penetrating Primer 5l
£ 60.78