Double Glazing and Energy Performance Improvements

Single glazing is a common feature in older East London properties and is a major contributor to poor EPC ratings. Replacing single-glazed windows with modern double or triple glazing reduces heat loss, cuts draughts, and improves the property's energy band. Even secondary glazing can provide a modest rating improvement at lower cost.

When replacing windows, ensure the installation is certified — FENSA or CERTASS registration provides documentation that EPC assessors can use to verify the upgrade. uPVC, timber, and aluminium frames are all acceptable provided they meet current building regulations for thermal performance. Landlords should balance upfront cost against long-term energy savings and tenant satisfaction.

After window upgrades, book a fresh EPC with Leyton Landlord Certificates to reflect the improvement on the register. Phone 0800 654 6211 for assessments across Leyton, Waltham Forest, and East London.