Questions covered in this guide
Two questions before a color choice
CertainTeed identifies weight and breakage under foot traffic as natural-slate considerations. A slate appearance and an actual stone roof are different specifications. Establish which result you want before asking anyone to price a conversion.
Separate design approval from material ordering
Ask who will evaluate the existing structure for the exact proposed stone product and assembly. Request a written description of what that review covers and what additional information the reviewer needs. Give them records of additions or previous roof alterations if available. Do not accept the age of the house, the current roof appearance, or a neighbor’s installation as the structural answer. Keep any required strengthening as a separate scope until its design is known.
Build a service-access worksheet
List equipment, chimneys, skylights, and other roof features that may need future attention. For each, write who services it, how access would be arranged, and whether that trade has worked around slate. Ask the roofer how repairs and matching replacement pieces would be handled. Add a row for the documentation you want retained: product identification, installer contact, condition photographs, and the structural review. This turns future upkeep into a concrete discussion before purchase.
Compare the alternatives honestly
Request separate proposals for natural slate and any slate-look material you are considering. Keep their names distinct throughout the comparison. Ask each contractor to identify included support work, access arrangements, and project exclusions. The national roof calculator is a budgeting reference, not a valuation of a particular stone roof. Make your selection only after the load question and installation scope have an identified professional owner.
Putting it into practice
The decision is whether to undertake a natural-stone conversion, not which photograph looks best. Separating structural review and future access prevents the visual preference from silently determining the construction scope.
Sources and supported claims
CertainTeed recommends assessing the building’s structural integrity because natural slate is extremely heavy.
Source ↗ · national · Checked 2026-10-12
CertainTeed cautions that slate can break when walked on and calls for experienced roofing professionals.
Source ↗ · national · Checked 2026-10-12