Rapid Set Adhesive for EWI –(EWI-221) - 25kg

Brand: EWI Pro
-£7.02
£11.99 Incl. VAT
£19.01 Incl. VAT (regular price)
Please note: This product has a slightly longer lead time. Our team wiil notify you with an estimated delivery date.

Save on the list

Log in to save items on your shopping lists and access them on all your devices. Guest lists are deleted after 90 days.

    EWI-221 Rapid Set Adhesive 

    Rapid Set Adhesive for EWI – Speed Up Your Work, Not Just for Winter!

    Rapid Set Adhesive is the perfect choice when you want to get the job done faster. With its fast-setting formula, it helps you save time on-site and keep your projects moving – all year round.

    Fast setting – ready for the next step in just a few hours
    Works well in cold weather – ideal for UK conditions
    Use – suitable for EPS
    Strong and reliable bond – even on tricky surfaces
    Saves time – speeds up installation and reduces downtime

    Why do installers in the UK use it mostly in winter?
    Because it works reliably even in low temperatures, helping you keep going when other adhesives slow you down.

    But this isn’t just a winter product – it’s the perfect choice whenever you need to work quickly and efficiently.

     

    Preparation

    The EWI-221 comes as 25kg dry mix. 6.3 litres of water need to be mixed with the dry mix to form the adhesive mortar. Once set firm and hard, it has excellent water and frost resistance and unsurpassed adhesive properties in colder weather. We suggest using a large bucket and adding the water prior to the winter adhesive. Once the winter adhesive has been added to the water, it needs to be mixed using a paddle mix until an even consistency mortar is produced. Once the winter adhesive has been mixed, leave the bucket for 5-10 minutes and then remix using the paddle mix. The adhesive is then ready for use.

    Application

    The presence of microfibres in the winter adhesive means that it will still set in a timely fashion even at low temperatures. This means continuous workflow when conditions would normally prevent it. EWI-221 Winter Adhesive can be used for two purposes:

    • An adhesive used to create the reinforcement basecoat layer.
    • An adhesive used to fix expanded polystyrene (EPS) to a substrate.

    EWI-221 is prepared in the same way regardless of whether it is being used as a basecoat adhesive or to fix the EPS insulation boards to the substrate. EWI-221 should not be used for fixing extruded polystyrene (XPS) and thermal insulation on bituminous substrates.

    Application Conditions

    • Substrate primer: EWI- 301 or EWI-310 if a key is required
    • Application temperature (air, substrate, materials): from +0°C to +25°C
    • Water mix proportions: approx. 6.3 l of water per 25 kg of dry mix
    • Time of usability after mixing with water: approx. 2 hours (temp. +20°C)
    • Quantity to be used: approx. 4-5 kg/m2

    Storage Conditions

    Comes in powder form in a 25kg paper bag. Store in a cool, dry place. Avoid ingress of water. Shelf life: up to 12 months from the date of manufacture.

    Frequently asked questions

    Winter Adhesive can be used even when the external temperature is as low as 0°C and can be used up to +25°C. Please note: the product can be used all year round as a bedding adhesive to stick the EPS to the masonry substrate but tends to dry too quickly for base coating & mesh above 12°C.

    Using a suitable paddle or pan mixer, you should mix approximately 6.3 litres of water per 25kg bag of Winter Adhesive until the mortar is consistent. Once mixed, leave for 5-10 minutes, then remix.

    Winter Adhesive can be used as a reinforcement basecoat layer; however, in temperatures above 12°C, the Winter Adhesive tends to dry too quickly, and therefore other basecoats, such as Premium Basecoat, should be used instead.

    Winter Adhesive should not be used for fixing extruded polystyrene insulation boards (XPS) and other thermal insulation boards on bituminous substrates. We recommend using Aquabase instead.

    Winter Adhesive takes an average of 3 days to dry after being applied. Once the insulation boards are fixed, you can use Winter Adhesive for the reinforcement layer.

    Save on the list

    Log in to save items on your shopping lists and access them on all your devices. Guest lists are deleted after 90 days.

      Other customers also viewed

      Water Based Substrate Primer (EWI-301) - 5 Litres
      Brand: EWI Pro
      £18.89 Incl. VAT
      Universal Primer (EWI-310) - 20kg
      Brand: EWI Pro
      £72.04 Incl. VAT
      Silicone Render (EWI-075) – 25KG
      Brand: EWI Pro
      FROM £83.99 Incl. VAT
      SELECT OPTIONS
      Render Accelerator (EWI-020) - 100ml
      Brand: EWI Pro
      £8.30 Incl. VAT