About Siptekk
Siptekk was founded by Oliver Barnard and Stuart Griffith of Griffiths & Barnard Ltd. With over 25 years of experience in the domestic extensions and conservatories industry, they established Siptekk to deliver a competitive and efficient SIP panel extension system — designed to challenge the overpriced conservatory market and the inefficiencies of traditional general builders.
Our roots lie in domestic construction. Over the decades, we expanded into land procurement and new build housing developments across Somerset. Meanwhile, GB Ltd evolved into a trusted commercial contractor, specialising in turnkey projects for clients across various sectors.
Our journey has included collaborations with educational institutions, retail establishments, and the creation of GBD Projects, focusing on high-end residential developments in South Somerset.
At Siptekk, we are committed to streamlining our operations and embracing innovative SIP building technology. By leveraging our extensive industry experience and strong professional network, we continue to drive growth and deliver efficient, modern, and sustainable building solutions.



25+ Years Experience
Fast build time
Planning permission and full building regs managed
Customer Reviews
L Harris
“Fantastic Company to deal with. Very Professional. Attention to detail is excellent. Lovely Team of people - Would Highly recommend.”
“Exceptional service. Concrete and steel works completed were first class. The team were great and very respectful to both us and our property. After discovering an unexpected drainage issue they dealt with it promptly, without fuss, a job well done and I’d highly recommend them.”
Angela Weids
Will Leach
“My experience was of a professional well run company. At all stages of the build I felt completely confident that everything was being managed thoroughly -a pleasure to deal with.”






