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In Focus

Positive Air Ventilation - The PIV Concept

Positive Input Ventilation - The PIV Concept

Positive Input Ventilation (PIV) is the simplest and most effective retrofit system that has been developed for existing properties, where condensation and its associated problems are occurring.

For more information on the PIV Concept, please view our latest interactive flipbook

Latest News

31/03/2015 - Easter Opening & Delivery Times

Are you ready for all your Easter DIY jobs? Don’... read more

25/03/2015 - Combat Damp Caused by Condensation with Sovereign's Auto Concure 20/20 Unit

Available to buy online now at and with a running cost as little as three pence per day, Sovereign’... read more

02/03/2015 - Combat Mould and Condensation with Sovereign Fungi-Chek AntiCon

Sovereign Fungi-Chek AntiCon emulsion is the new advanced coating system that combines Fungi-Chek’... read more




New Products

Sovereign Chemicals, market leaders in chemical damp proof coursing, façade treatment and remedial timber treatment


This reputation has been gained for the quality of its products and also for the support and care offered under the Sovereign Protection Scheme Guarantee. Since 1976 over half a million satisfied property owners are testimony to the effectiveness of the Scheme.


Flexibility is available with the choice of 10, 20 or 30 year Protection Scheme Guarantees for timber and damp proof courses and the introduction of a 10 year Guarantee for façade treatment.


Sovereign Protection Scheme Guarantees are offered by remedial contractors who have been vetted by Sovereign. Only when we are satisfied that they are capable of carrying out work to a consistently high standard do we allow contractors to apply to become Sovereign Approved Contractors. Regular site visits ensure that standards of workmanship and customer care are maintained.



BBA British Safety Council BDMA pca BSI CPD