

Remmers Primer Hydro S F (formerly Silicate Strengthener) is an alkaline, cementitious strengthener, this product forms a silicate gel. It reacts immediately with cement or cement mixtures as a rapid binder.
Remmers Primer Hydro S F (formerly Silicate Strengthener) is an alkaline, cementitious strengthener, this product forms a silicate gel. It strengthens the surface and the structure (capillary pores and fine cracks) of old masonry work but is not water repelling. It does not produce a hydrophobic effect. It reacts immediately with cement or cement mixtures as a rapid binder, e.g. for shotcrete and for plugging.
Remmers Primer Hydro S F is to be used for strengthening the structure (by injection) and the surface (under gravity) of friable old masonry work in fine pored areas. It can also be used for rapid sealing of leaking areas and water running cracks in basement and shaft construction by adding it to Portland cement and mortar.
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
![]() | Question:
Can this be used on Thermalite blocks to strengthen the surface? We have had a small extension built with the inner leaf comprising of thermalite blocks, which I’ve heard are difficult to drill into in order to mount things like cupboards and TVs on. |
Answer from Rawlins’ Technical Team:
No, this is for use with cement or cement mixtures only. | |
Remmers Primer Hydro S F (Silicate Strengthener) is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT