More than happy And that i am about to buy extra secondary double glazing and several polycarb replacements to the greenhouse. Our Secondary Glazing technique is quite discreet - designed and fitted to blend in to the existing windows and doors, it really is: We only use obvious acrylic sheets https://patio-string-lights06653.bloggactivo.com/26141443/condensation-resistant-glazing-in-sw1v-for-dummies