The moment cured apply structural silicone as per provider’s facts sheet to the bottom aluminium angle trim flat surfaces firmly fitting them in position. Surplus silicone should really then be wiped away that has a finishing tool. Dowsil 791 very low modulus climate proofing silicone and Dowsil 895 Structural sealant https://augustvgyfk.frewwebs.com/27337154/the-fact-about-double-glazing-soundproofing-that-no-one-is-suggesting