Step 1. First, Glass Reinforced Plastic 'GRP' ladders are craned to your existing Orangery window frames. GRP is not prone to woodworm, moisture absorption (such as traditional timber) or condensation and thermal bridging (such as bulky Aluminium alternatives), the beginning of your improved Orangery roof insulation.

Step 2. Insulated PIR sheets or EPS alternatives are snugly fitted within a 15mm gap from the internal GRP sheets. We only use market leading brands providing high-value thermal efficiency and BBA certification as well as a significant benefit in achieving a better Orangery roof insulation efficiency level. A range of alternative materials are supplied, depending on which Leka System energy value is selected.

Step 3. Next, our lightweight, static load tested and thermally efficient external Leka Sheets are installed. These sheets are 100% waterproof and impermeable to moisture, making them a fantastic alternative to wooden alternatives.

Step 4. An outer weatherproof coating is then applied by your installation company. This will include final waterproofing along with a stylish finish ensuring that your Orangery roof is the ultimate in watertight insulation.

Step 5. A glass lantern is then lowered onto the current structure and fixed into place.

Step 6. Next, internal Leka sheets are added underneath the GRP rafters. The Leka sheet are 100% waterproof and one third the weight of plasterboard. These sheets have unique thermal qualities as well, but allow for a traditional plaster skim finish or provide a wide visual aspect ready for painting afterwards. Alternative finishing boards can be supplied, depending on your Leka System energy value of choice.