16
£2,142.96
  • × This image displays the front of the product which is a Soudal Genius Gun Gap Filling and Expanding Foam - 750ml (Box of 12)Soudal Genius Gun Gap Filling and Expanding Foam - 750ml (Box of 12) 1 × £62.88
  • × Klober Universal Tile Vent Terracotta KG9854Klober Universal Tile Vent Terracotta KG9854 (Box of 10) 1 × £269.99
  • × Bond It B1 Fire Resistant PU Gun Grade Expanding Foam - Pink 750mlBond It B1 Fire Resistant PU Gun Grade Expanding Foam - Pink 750ml 1 × £8.99
  • × Timloc Lap VentTimloc Underlay Felt Lap Vent 1 × £3.50
  • × Easy-Trim Universal Dry Verge System Black (Pallet of 400)Easy-Trim Universal Dry Verge System Black (Pallet of 400) 1 × £556.00
  • × Bond It Patination Oil 500mlBond It Patination Oil 500ml 1 × £7.99
  • × Armatool 30m Longo Chalk LineArmatool 30m Longo Chalk Line 1 × £14.99
  • × Kwik Flash Lead Turn In Setting Tool For Lead & Zinc FlashingKwik Flash Lead Tool - Turn In Setting Tool For Lead & Zinc Flashing 1 × £18.80
  • × ALM Code 5 Milled Lead - 1000mm x 3mALM Code 5 Milled Lead - 760mm x 6m 1 × £328.51
  • × Soudal Cleaner & Degreaser - 400mlSoudal Cleaner & Degreaser - 400ml 1 × £8.99
  • × Code 8 Lead FlashingALM Code 8 Milled Lead - 760mm x 3m 1 × £260.54
  • × FloPlast Half Round External Stop End, White – 112mmFloPlast Half Round External Stop End, White – 112mm 1 × £3.99
  • × Code 3 Cast Lead - 360mm x 6mCode 3 Cast Lead - 360mm x 6m 1 × £91.39
  • × This image displays the front of the product which is a FreeFlow Round 112mm Gutter System 135° Angle - WhiteFreeflow Round 112mm Gutter System 135° - White 1 × £3.99
  • × Code 7 Cast Lead - 800mm x 6mCode 7 Cast Lead - 800mm x 6m 1 × £488.38
  • × OX Tools 14 inch / 350mm Pro Stainless Steel Plasterers Mud PanOX Tools 14 inch / 350mm Pro Stainless Steel Plasterers Mud Pan 1 × £14.03

Subtotal: £2,142.96

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Bank Holiday Notice: Orders placed after 2:00 PM on Friday, August 23rd, will be shipped on Tuesday, August 27th.

16
£2,142.96
  • × This image displays the front of the product which is a Soudal Genius Gun Gap Filling and Expanding Foam - 750ml (Box of 12)Soudal Genius Gun Gap Filling and Expanding Foam - 750ml (Box of 12) 1 × £62.88
  • × Klober Universal Tile Vent Terracotta KG9854Klober Universal Tile Vent Terracotta KG9854 (Box of 10) 1 × £269.99
  • × Bond It B1 Fire Resistant PU Gun Grade Expanding Foam - Pink 750mlBond It B1 Fire Resistant PU Gun Grade Expanding Foam - Pink 750ml 1 × £8.99
  • × Timloc Lap VentTimloc Underlay Felt Lap Vent 1 × £3.50
  • × Easy-Trim Universal Dry Verge System Black (Pallet of 400)Easy-Trim Universal Dry Verge System Black (Pallet of 400) 1 × £556.00
  • × Bond It Patination Oil 500mlBond It Patination Oil 500ml 1 × £7.99
  • × Armatool 30m Longo Chalk LineArmatool 30m Longo Chalk Line 1 × £14.99
  • × Kwik Flash Lead Turn In Setting Tool For Lead & Zinc FlashingKwik Flash Lead Tool - Turn In Setting Tool For Lead & Zinc Flashing 1 × £18.80
  • × ALM Code 5 Milled Lead - 1000mm x 3mALM Code 5 Milled Lead - 760mm x 6m 1 × £328.51
  • × Soudal Cleaner & Degreaser - 400mlSoudal Cleaner & Degreaser - 400ml 1 × £8.99
  • × Code 8 Lead FlashingALM Code 8 Milled Lead - 760mm x 3m 1 × £260.54
  • × FloPlast Half Round External Stop End, White – 112mmFloPlast Half Round External Stop End, White – 112mm 1 × £3.99
  • × Code 3 Cast Lead - 360mm x 6mCode 3 Cast Lead - 360mm x 6m 1 × £91.39
  • × This image displays the front of the product which is a FreeFlow Round 112mm Gutter System 135° Angle - WhiteFreeflow Round 112mm Gutter System 135° - White 1 × £3.99
  • × Code 7 Cast Lead - 800mm x 6mCode 7 Cast Lead - 800mm x 6m 1 × £488.38
  • × OX Tools 14 inch / 350mm Pro Stainless Steel Plasterers Mud PanOX Tools 14 inch / 350mm Pro Stainless Steel Plasterers Mud Pan 1 × £14.03

Subtotal: £2,142.96

View basketCheckout

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How to Waterproof Mortar, Concrete and Screeds

It would take too long to recount all the various places in your house where mortar, screeds and concrete are used. Whether it’s the mortar that holds bricks together, or the screed that covers concrete they’re present in every home. However, they also have something else in common – they are very porous and as a result they are extremely vulnerable to water damage.

It’s this property which has damaged so many buildings in the brutalist style (from breton brut or raw concrete). But it doesn’t have to happen to you. You can stop water seep before it even starts if you’re proactive and use a silicate waterproofer like the Sika-1 Waterproofer when making your concrete or mortar.

You will need:

  • Safety Gloves and Goggles 
  • Concrete mixing vessels 
  • Aggregate
  • Gauging Water
  • Sika-1 Waterproofer equal to one-tenth of the gauging water (more if mixing wet sand-based materials, see below)

Using the Waterproofer for Mortar or Concrete

In order to use the waterproofer for standard mortar or concrete it needs to be added to the gauging water. You should add one part waterproofer for every ten parts water. The water should then be stirred until the waterproofer has spread evenly throughout all the water. The alternative is to wait until the final mix of concrete has been made and to add the waterproofer again. This is still possible, but is less efficient than adding it to just the water because you will need to mix it to spread it evenly, which is harder once the aggregate has already been added.

Using the Waterproofer for wet sand-based screeds and concretes

Screeds are sand aggregate-based layers laid on top of concrete to provide a tough surface layer. Any concrete made with wet sand will use less gauging water because the sand is already wet, so you will need to apply proportionally more waterproofer to the water to compensate. Apply the waterproofer as per normal but this time use one part waterproofer per eight parts water. You may even want to take it as high as one part waterproofer per seven or six parts water. 

Whichever method you use, once it’s done you can apply the concrete as you would normally. 

Notice

The content in this post article is for information purposes only. We do our best to make sure our content is accurate. However, we highly recommend that you always seek to use a professional roofer or builder.

ERoofing will not accept liability for injury, loss or damage from the use of this content.

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