MHIC #114601 · FAMILY-OWNEDStraight answers
Roofing materials compared: what each is good at — and what it isn't
Most roofing sites list materials and call every one of them excellent. That is no help when you are the one choosing. This is what we would tell you standing in your driveway.
| Material | Service life | Where it is the right call | Where it is not |
|---|---|---|---|
| Architectural asphalt | 25–30 yr | Most Maryland pitched roofs. Best cost-to-life ratio available. | Sheds granules in sustained heat. Not rated below a 2:12 pitch. |
| 3-tab asphalt | 15–20 yr | Budget repairs and matching an existing 3-tab roof. | Shorter life, thinner wind rating. We rarely recommend it new. |
| Standing seam metal | 40–70 yr | Long holds, low-slope tolerance, sheds snow and ice cleanly. | Highest upfront cost. Oil-canning shows on wide panels. Louder in heavy rain. |
| Natural slate | 75–150 yr | Historic Baltimore homes and matching an existing slate roof. | Very heavy — many frames need reinforcing. Costly to repair, few installers left. |
| EPDM membrane | 20–25 yr | Row-home roofs and low-slope rear additions. | Black membrane absorbs heat. Seams are the failure point, so seam work is everything. |
| TPO membrane | 20–30 yr | Commercial flat roofs where a reflective surface cuts cooling load. | Quality varies sharply between manufacturers. Weld quality decides the lifespan. |
How to choose
How to choose a roofing material for a Maryland home
1. What is your roof pitch?
Below 2:12 rules out standard shingles entirely, no matter what anyone quotes you. That is a membrane roof. Most Baltimore row homes and rear additions fall here.
2. How long are you staying in the house?
If you are moving in five years, a 70-year metal roof is money spent for the next owner. If this is the forever house, the math flips.
3. What roofing material is on there now?
Matching an existing slate or 3-tab roof on a partial job is a real constraint. A full tear-off frees you to change material.
4. Can the roof frame carry the weight?
Slate is roughly four times the weight of asphalt. Older Maryland framing often needs reinforcing before slate goes back on. This gets checked before anyone quotes it.
Not sure which applies to your roof?
Not sure which roofing material your roof needs?
We go up, photograph what is there, and walk you through the options for your pitch, your frame and how long you are staying. If your current roof has life left in it, we will say so.