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⭐ 4.9 · 48 reviews · Serving Severn, Gambrills, Millersville, Odenton +13 areas
4.9 · 48 Google reviewsMaryland Roofing, Siding & Windows — Family-Owned Since 2016
Family-owned roofing and exterior contractor based on Thompson Ave in Severn, MD — licensed under MHIC #05-146983 since 2016. We replace roofs, repair leaks, install James Hardie siding, ENERGY STAR windows, seamless gutters, and entry doors across Anne Arundel, Howard & Baltimore County with our own W-2 crews. Free written estimate back in 24 hours. Call 410-508-6141.
Get My Free Estimate →Call +1 4105086141Free written estimate — back in 24 hours. Call 410-508-6141.
Family-owned roofing and exterior contractor based on Thompson Ave in Severn, MD — licensed under MHIC #05-146983 since 2016. We replace roofs, repair leaks, install James Hardie siding, ENERGY STAR windows, seamless gutters, and entry doors across Anne Arundel, Howard & Baltimore County with our own W-2 crews. Free written estimate back in 24 hours. Call 410-508-6141.
4.9 · 48 Google reviewsFree written estimate — back in 24 hours. Call 410-508-6141.
4.9 · 48 Google reviews
WHY MARYLAND HOMEOWNERS CALL APPER
Apper Construction is a family-owned Maryland exterior contractor based on Thompson Ave in Severn — we've been on Anne Arundel and Howard County roofs since 2016. Roofing, roof repair, siding, windows, gutters, doors. That's it. No basement remodels, no kitchen renovations. We do exteriors, and we do them right. Call 410-508-6141 for a free written estimate.
Every job is installed by our own W-2 employees — never subcontracted. We use architectural shingles, full ice-and-water shield at all eaves and valleys, and ridge venting that meets current Anne Arundel County code. James Hardie fiber-cement and premium vinyl siding installed to manufacturer spec. ENERGY STAR–rated windows with lifetime glass-breakage coverage. MHIC #05-146983.
You get a written, line-itemed estimate before anything is scheduled. Clear pricing, no high-pressure sales, and a job site left clean. We carry $2M general liability and are fully bonded. Financing available — 0% APR for 18 months for most homeowners. GAF Master Elite® certified and CertainTeed SELECT ShingleMaster™ approved. Family-owned since 2016. Call 410-508-6141.
Get My Free EstimateWHAT WE DO
GAF, CertainTeed, James Hardie, and ENERGY STAR products installed to a Maryland-specific spec — built for nor'easter wind off the Bay, summer thunderstorms, and the freeze-thaw cycle that breaks lesser roofs. Every project gets a free written estimate and our 25-year workmanship warranty. Call 410-508-6141.
Family-owned since 2016, MHIC #05-146983 — serving Anne Arundel County, Howard County, and Baltimore County, Maryland.
Full tear-off and architectural shingle install — ice-and-water shield at every eave and valley, ridge venting to current Anne Arundel County code, and a 25-year workmanship warranty. 1–2 day install on most homes. Family-owned since 2016, MHIC #05-146983. Free written estimate · 410-508-6141.
James Hardie fiber-cement and premium vinyl siding — color-matched, HOA-vetted when needed, and tough enough for nor'easter wind off the Chesapeake. We install to manufacturer spec with full housewrap, precision fastening, and flashed transitions. Free estimate · 410-508-6141.
ENERGY STAR–rated replacement windows with lifetime glass-breakage coverage installed across Anne Arundel and Howard County. Lower BGE energy bills, quieter rooms, and a written estimate back in 24 hours. Family-owned since 2016, MHIC #05-146983. Free estimate · 410-508-6141.
Seamless aluminum gutters and leaf-guard systems fabricated on-site and sized for Maryland's heavy summer downpours and oak-canopy debris load. Note: we install and replace gutters — we don't do gutter cleaning. Free written estimate · 410-508-6141.
Entry, storm, and patio doors built for Maryland weather — pre-hung, properly flashed, and installed in a day by our own crew. Energy-efficient options available. Free written estimate across Anne Arundel and Howard County. Family-owned since 2016, MHIC #05-146983. Call 410-508-6141.
OUR WORK
Browse recent roofing, siding, window, and gutter projects completed across Anne Arundel and Howard County. Real Maryland homes, real results — and the same family-owned crew on every one. Call 410-508-6141 for references or a free estimate.
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AfterWHAT MARYLAND HOMEOWNERS SAY
Leandro and his company replaced the siding on my house. From the very beginning of the estimate to the completion of the job I was very pleased with it all. Leandro is kind, honest, polite and professional explaining every thing in detail with an itemized estimate. He and the crew were all prompt and efficient. I highly recommend!
Doris Dukes
2026-06-27
Leandro was prompt, profession and efficient from the bid process through repair. I would definitely use Apper Const. again and highly recommend them. Pete P.
Pete Peterson
2026-06-18
Leo and his crew were professional and efficient. They did an excellent job installing my windows. They take pride in their craftsmanship. I highly recommend them for your roofing, windows, siding, and deck needs. I have used them on multiple projects and have been nothing but completely satisfied with their service
Jack Thomas
2026-06-05
Very kind and knowledgeable, and responsible. I highly recommend this company!
Vicki Dando
2026-05-15
Great company and great work! Very pleased with the service and my new roof. Needed a new roof quickly for my homeowner's insurance and they went above and beyond to get it done in time. I appreciated the upfront pricing and explanations along the way.
Kristina Hudgins
2026-05-15
Recently, Leandro did a job for me having to do with damaged soffit. I was extremely impressed with his professional attitude, timeliness, and honesty. I would use his company again and would highly recommend his company.
Ann Hall
2026-04-10
Insights & tips
Practical guidance to help you plan your next project.
Real 2026 roof replacement pricing for Severn, Severna Park, Odenton, Glen Burnie, Millersville, Crofton, Gambrills, and Crownsville — by roof size, material, and what actually moves the number. From a licensed MHIC contractor based in Severn.
A 140°F July attic and February ice dams come from the same gap: unbalanced ventilation. How Maryland roofs are supposed to actually breathe.
Bay humidity warps cheap siding inside five years. Here's what survives in Anne Arundel, plus how to clear Columbia ARC and Annapolis HOA review.
Real 2026 roof replacement pricing for Severn, Severna Park, Odenton, Glen Burnie, Millersville, Crofton, Gambrills, and Crownsville — by roof size, material, and what actually moves the number. From a licensed MHIC contractor based in Severn.
A 140°F July attic and February ice dams come from the same gap: unbalanced ventilation. How Maryland roofs are supposed to actually breathe.
Bay humidity warps cheap siding inside five years. Here's what survives in Anne Arundel, plus how to clear Columbia ARC and Annapolis HOA review.