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*The Angi rating for Egress Window Service companies in Liberal, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Egress Window Service needs.

*The HomeAdvisor rating for Egress Window Service companies in Liberal, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Egress Window Service needs.

Last update on January 22, 2026

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Avatar for HELITECH Ozarks

HELITECH Ozarks

4.50(
2
)

HELITECH Ozarks

4.50(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Helitech is a family, locally-owned specialty contractor that provides waterproofing, foundation repair, & concrete repair services to homeowners across a 4 state region. Services include basement & crawlspace waterproofing & encapsulation, complete foundation repair - piering, wall anchoring, & crack repair, as well as concrete leveling / mudjacking, dehumidifiers, sump pumps, & yard drainage.

"Good job was done"

Rick E on November 2023

Helitech is a family, locally-owned specialty contractor that provides waterproofing, foundation repair, & concrete repair services to homeowners across a 4 state region. Services include basement & crawlspace waterproofing & encapsulation, complete foundation repair - piering, wall anchoring, & crack repair, as well as concrete leveling / mudjacking, dehumidifiers, sump pumps, & yard drainage.

"Good job was done"

Rick E on November 2023

Avatar for WINDO THERM

WINDO THERM

No reviews yet

WINDO THERM

No reviews yet
25 years of experience

We manufacture Advanced Energy Panels (AEPs). AEPs are a retrofit for historic windows or any window people can't afford or don’t wish to replace. AEPs are interior window insulating panels and can be installed in any building –office, home or industrial. AEPs have a higher insulation and air sealing rating and provide greater comfort than most replacement windows, yet they are a fraction of the cost. AEPs are custom made to fit over existing openings, protecting, preserving and improving your existing windows.

We manufacture Advanced Energy Panels (AEPs). AEPs are a retrofit for historic windows or any window people can't afford or don’t wish to replace. AEPs are interior window insulating panels and can be installed in any building –office, home or industrial. AEPs have a higher insulation and air sealing rating and provide greater comfort than most replacement windows, yet they are a fraction of the cost. AEPs are custom made to fit over existing openings, protecting, preserving and improving your existing windows.

Egress Windows questions, answered by experts

You install a window well 8 to 12 inches deeper than the base of the window sill. After filling the well with drainage rock, the well should sit 3 inches below the bottom of the window. The top of the window well should also be at least 3 inches higher than the surface-grade ground. The window well should be about 6 inches wider than the window opening.

Installing two windows typically takes 2-4 hours, depending on accessibility and preparation.

Clean the glass regularly, inspect the frame and well for debris, and ensure the cover or well drains properly.

Yes, you absolutely need a permit to add a window to your house. Your contractor can likely obtain this permit on your behalf. Ask about this when getting quotes from multiple window contractors.

Depending on size, material, and labor, two windows can cost between $600 and $1,600.

The Liberal, MO homeowners’ guide to egress window services

From average costs to expert advice, get all the answers you need to get your job done.

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