The ice along a roof in Allentownline is the symptom. The cause is warm air escaping into the attic, and it is still running right now. As part of our complete Allentown winter roof services, crews handle commercial ice dam removal across Lehigh County.
Why Allentown Roofs Dam Up: Nor'easter Load and the Maritime Swing
Lehigh County gets the worst combination for ice: snow with high water content, followed by temperatures that oscillate rather than settle. The pack does not stay frozen and it does not drain.

Retrofits often made it worse rather than better. Insulation laid on an attic floor without sealing the bypasses underneath it keeps the living space warm and sends the same warm air straight to the roof deck.
Ice-barrier practice in Lehigh County
Ice-barrier membrane at the eaves is standard on re-roofs across coastal Pennsylvania, and many towns enforce it strictly. Homes that have not been re-roofed since that became normal practice are the ones that leak first.
Commercial Ice Dam Removal in Allentown: How The Work Runs
The pitched sections nobody plans for
Very few commercial buildings are flat all the way across. Entrance canopies, mansard faces, dormers over older frontages and the sloped transitions between roof levels all shed onto places where people walk.
Those sections behave like a residential roof and get worked like one - steam at the eave, snow guards noted where they are missing, and the pavement below cordoned while material is coming down.
Overflow scuppers are the tell
Water running out of an overflow scupper in winter means the primary drains are not taking it. On an Allentown building that is a sign the roof is holding standing water somewhere above a frozen drain, and the load is being carried rather than shed.
Scuppers are checked first for exactly that reason, and a dry scupper above a wet roof is as informative as a running one.
Insulation above the deck changes the melt pattern
A modern commercial assembly puts most of its insulation above the deck, so very little building heat reaches the membrane. That is good for energy and it means the snow that lands mostly stays - the roof does not self-clear the way an under-insulated one does.
Where dams do form on those roofs it is almost always at a thermal bridge: a parapet, a curb, a drain bowl or a line of fasteners. Those are the spots crews work first.
Built for property managers
One contact, one scheduled window, one invoice coded the way your accounting needs it. Crews work around tenant hours where that matters, and the condition report goes to whoever has to show the board or the owner what was spent and why.
Roof warranties and who is allowed up there
Most commercial membranes carry a manufacturer's warranty with conditions about who may work on the roof and what methods are permitted. Snow removal is generally fine; mechanical ice removal very often is not, and the wrong contractor with the wrong tool can void cover worth considerably more than the clearing.
The warranty gets read before the roof is walked, and the method used is one the document permits.

What you get in Allentown
- EPDM, TPO and mod-bitLow-pressure steam only, seams and flashing details avoided
- Plant worked aroundHVAC curbs, conduit, racking and railing avoided, not cleared over
- Overnight windows availableWork scheduled outside occupancy where access demands it
| Local ice-barrier practice | Eave membrane standard on re-roofs |
|---|---|
| Removal method | Low-pressure steam only. No chipping, salt or pressure washing. |
| Pricing model | Billed by the crew hour, rate quoted before dispatch |
| Dispatch window | Same day to 24 hours |
| Service | Commercial Ice Dam Removal in Allentown, PA |
| Typical scope | Steam, 4-10 crew hours typical |
| Coverage area | Allentown and Lehigh County |
Lehigh County Coverage From Allentown
Crews working Allentown cover the adjoining communities on the same route — Lehigh Valley, Whitehall, Catasauqua, Center Valley and Emmaus — so a storm week usually means one truck handling several addresses in Lehigh County rather than separate trips.
Nearest hub towns with their own commercial ice dams pages: Bethlehem, Easton, Pottstown, Reading, Norristown, Pocono Pines.
During a cold snap Allentown gets worked alongside the neighboring Lehigh County towns on the same route, with active interior leaks moved to the front of the list.
Most jobs do not stop at one service. Commercial Ice Dams in Allentown often runs alongside commercial roof snow removal in Allentown, and both get written into one scope rather than billed as separate visits.
Active leak right now? Our 24/7 Allentown steam ice dam removal crews are dispatched first during a freeze event. Call (888) 561-9664.




