Buildex Hex Head With Seal Timber Screws 14G x 100mm Climaseal SKU: 194800 MODEL: X603864 Error. try again later You've successfully joined the club $ 31 .76 pack of 25 Available on orders $50 to $1500. More info × Mitre 10 MAvailable at Mitre 10 MEGA stores. Variants Type 17 Hex Head Timber Screws with seals are suitable for roofing applications. Features and benefits Superior trade quality. Crest fixing roofing in to timber battens. External use.