LATEST ARTICLE · Planning & regulations
Granny Annexe Planning Permission UK
Read our granny annexe planning permission UK guide. Explore when consent is needed, permitted development considerations and common reasons for refusal.
Read articleTHE TRJ JOURNAL · IDEAS & PRACTICAL INSIGHTS
SIP Construction Blog
Explore garden rooms, granny annexes, planning and the construction details behind a well-designed building.
39 articles · Page 1 of 5
Planning & regulations
Granny Annexe in Flood Zone 2
Can you build a granny annexe in Flood Zone 2? Learn how flood risk, raised floor levels and screw pile foundations can affect planning and design.
Read article
SIP construction
Thermal Comfort in SIP Buildings
See why thermal comfort in SIP buildings is about more than energy bills, including surface warmth, condensation control and comfort.
Read article
SIP construction
Structural Strength of SIP Panels
Explore SIP panel strength, rigidity and stability. Learn how composite action, connections and structural design support a durable garden building.
Read article
SIP construction
Airtightness in SIP Construction
Learn how airtightness in SIP construction affects draughts, heat loss and comfort, and why planned ventilation matters in garden rooms and granny annexes.
Read article
SIP construction
EPS vs PUR/PIR SIP Panels
Compare EPS vs PUR/PIR SIP panels for insulation and building performance. Explore the role of the panel core, system design and installation details.
Read article
SIP construction
SIP Panel Thickness
Learn why SIP panel thickness affects insulation, comfort, condensation control and year-round performance in garden rooms and annexes.
Read article
SIP construction
Understanding SIPs
Understanding SIPs beyond the marketing: explore structure, insulation, composite action and long-term performance in garden rooms and granny annexes.
Read article
Foundations
Sub-Floor Ventilation for Screw-Pile Garden Rooms
Explore sub-floor ventilation beneath screw-pile garden rooms and granny annexes, with guidance on moisture control and long-term building performance.
Read article
