What we install.
TPO single-ply, modified bitumen (cap-sheet over base sheets), and built-up roofing (BUR) systems for mid-century and contemporary Grove homes with low-slope or hidden-parapet roofs. Tapered insulation drainage retrofits where existing roofs pond water. Roof-top mechanical curb and skylight integration.
When flat-roof systems are the right answer.
Mid-century moderns built between 1955 and 1980 often have low-slope roofs hidden behind parapet walls. Contemporary infill homes use parapet flat roofs as architectural language. In both cases, the right answer is rarely “convert it to a sloped roof” — the architecture demands flat. The right answer is to install a modern system that matches the building’s drainage and thermal requirements.
System options.
- TPO (thermoplastic polyolefin). White single-ply membrane. Fully adhered or mechanically fastened. Good UV reflectivity and 20–25 year warranty options. Most common modern choice.
- Modified bitumen. Cap-sheet system. Good for moderate-budget projects, 15–20 year warranty profiles. Forgiving of substrate irregularities.
- Built-up (BUR). Multi-ply asphalt and felt. Heavier system, longer install time, traditional in older mid-century homes. We use it where the architectural-history match matters.
Drainage retrofits.
Many Grove flat roofs were installed without adequate slope-to-drain, especially in 1960s and 70s construction. Ponding water shortens system life dramatically. We can install tapered insulation under the new membrane to create positive drainage to existing scuppers or roof drains, often without changing the parapet wall height.
Timeline.
A 2,000-square-foot flat-roof TPO replacement runs 3–5 working days. Modified bitumen runs 4–6 working days. Add tapered-insulation work to the front of either timeline if a drainage retrofit is needed.