
At New Concept Construction Limited, we specialise in providing high-quality mastic sealant services for air test works. With over a century of collective experience, our team understands the critical importance of ensuring buildings are properly sealed to meet airtightness requirements. We work closely with house builders, construction professionals, and the commercial sector to deliver tailored solutions that improve energy efficiency and meet compliance standards.
Achieving optimal airtightness is vital for energy conservation, reducing heat loss, and improving overall building performance. Our mastic sealant services help ensure that air test works are successful, offering peace of mind to our clients by preventing unwanted air leakage.


At New Concept Construction Limited, we take pride in offering meticulous and reliable mastic sealant services for air test works. Our fully trained and certified team is committed to delivering results that meet the highest standards of quality and compliance, ensuring that your building performs efficiently and meets required airtightness levels.
Our expert knowledge and attention to detail allow us to provide competitive pricing while maintaining exceptional workmanship. We have a long history of working with house builders and the commercial sector, and our reputation for reliability makes us the preferred choice for mastic sealant services in air test works.
NCC have always provided me with a reliable, high standard of service and quality.
We strongly recommend your workforce, who are reliable, polite, pleasant and their workmanship is of the highest quality.
NCC have always provided an exceptionally high quality of service. I used them previously at Barratt London and subsequently at London Square and have never had any issues. The site managers are also very happy with their workmanship, and proactive and user friendly approach on site.