j.d.mastics is a new and growing company with highly skilled applicators with 14 yrs experience. j.d.mastics will under take any mastic sealant jobs from big to small domestic and commercial e.g kitchens/ bathrooms/ windows/doors/ floor joints/ fire proofing/ two-part/ anti-pic/ cut out and reseal ect. j.d.mastics will give you free estimates and we are clean and reliable.