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Sika 1 Waterproofer Liquid Admixture

Sika 1 Waterproofer Liquid Admixture is an aqueous solution containing complex colloidal silicates. In the presence of water these swell and block the capillaries and pores in the applied sand/cement renders, screeds and mortar to provide an effective barrier against the transmission of liquid water.

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£54.76 + VAT

Sika 1 Waterproofer Liquid Admixture is an aqueous solution containing complex colloidal silicates. In the presence of water these swell and block the capillaries and pores in the applied sand/cement renders, screeds and mortar to provide an effective barrier against the transmission of liquid water.

Sika 1 Waterproofer Liquid Admixture is used with Sika 1 Structural Waterproofing System mortars which are pre-bagged, kiln dried blends of specially graded aggregates and cements packaged in 4 grades at the appropriate mix ratios for optimum application performance and durability. When mixed with the diluted Sika 1 Waterproofer Liquid Admixture they provide the multicoat components for the structural waterproofing systems.

Sika 1 Waterproofer Liquid Admixture can be added in measured quantities to Sika mortars to create;

  • Structural waterproof renders to resist water pressure below ground
  • Structural waterproof screeds to resist water pressure below ground
  • Waterproof renders to resist moisture and dampness above ground level
  • Internal waterproof tanking
  • General waterproofing admixture for mortar

Features and Benefits

  • Proven for more than 90 years
  • For use with Sika pre-batched system mortars
  • For brick, concrete and stone substrates
  • Compatible with OPC and SRC
  • Can be applied against live water infiltration
  • Wall render and floor screed application
  • Can be used internally and externally

Approvals & Standards

  • Accredited by the BBA cert Number 00/3761 which states under durability “Under normal conditions of use, the systems will provide an effective barrier to the transmission of liquid water for the life of the building to which they are applied.
  • WRAS Certificate 0505506
  • DWI Exemption

Consumption & Dosage

Sika 1 Waterproofer Liquid Admixture is diluted 1:10 by volume with clean water to form a gauging solution.

Wall Render:
1st coat 25 kg bag Sika 1 Spritz and Bonding Coat Mortar - 5.7L gauging solution
2nd coat 25 kg bag Sika 1 Render Mortar - 3.3L gauging soultion
3rd coat 25 kg bag Sika 1 Finishing Mortar - 3.3L gauging solution

Floor Screed:
1st coat 25 kg bag Sika 1 Spritz and Bonding Coat Mortar - 5.7L gauging solution
2nd coat 25 kg bag Sika 1 Spritz and Bonding Coat Mortar - 5.7L gauging solution
3rd coat 25 kg bag Sika 1 Screed Mortar - 2.5L gauging solution

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Free delivery on orders over £75 (terms & conditions)

• Deliveries will be made within 3 working days (standard delivery)
• You must be UK mainland based for the free delivery offer.
• Postcodes listed are excluded from the free delivery and priced below.

Please note: deliveries will need to be signed for at the point of delivery.

UK Mainland OnlyUp to £75.00£75.01 +
Standard (2/3 working days)£8.00FREE
Next Day£15.00£15.00
Next day before 09:00am£30.00£30.00
Next day before 10:30am£25.00£25.00
Next day before 12:00pm£20.00£20.00
Saturday Delivery£35.00£35.00














£25 (Standard 2-3 Day Delivery Only)

AB30, AB31, AB32, AB33, AB34, AB35, AB36, AB37, AB38, AB44, AB45, AB46, AB47, AB48, AB49, AB50, AB51, AB52, AB53, AB54, AB55, AB56, FK, G83, IV, KW1, KW2, KW3, KW4, KW5, KW6, KW7, KW8, KW9, KW10, KW11, KW12, KW13, KW14, PA, PH, HS, KA27, KA28, ZE

£35 (Standard 2-3 Day Delivery Only)

BT, IM

£50 (Standard 2-3 Day Delivery Only)

JE, GY

Please note that all carriage prices are quoted without V.A.T. at the current rate.

Scottish Islands - outside standard distribution area, please contact us for a quote.

There may be an exception for heavy goods when purchased in quantity where we will contact you to advise any additional charges.

Next Day delivery and Saturday Service is available on stocked items for orders received before 11:00am only.

Because of the nature of our products, we use specially selected carriers to ensure safe and prompt delivery to you.

Please note: Any time or date named by Rawlins Paints Limited for delivery is given and intended as an estimate only and Rawlins Paints Limited shall not be liable to make good any damage or loss whether arising directly or indirectly out of a delay in delivery. Deliveries are made using a reliable nationwide carrier. Although over 99% of consignments arrive on time, we recommend that no labour is employed to undertake work until materials have arrived on site.

Sika 1 Waterproofer TDS

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Sika 1 Waterproofer MSDS

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