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*The Angi rating for Decorative Concrete Service companies in La Harpe, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Decorative Concrete Service needs.

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Last update on December 04, 2025

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Collins Concrete

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Collins Concrete

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Residential and commercial concrete contractor, featuring decorative concrete. General contractor of Premier Post Frame Buildings (pole buildings) for agriculture, residential, commercial use.

Residential and commercial concrete contractor, featuring decorative concrete. General contractor of Premier Post Frame Buildings (pole buildings) for agriculture, residential, commercial use.

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Decorative Concrete questions, answered by experts

As a general rule of thumb, allow 24 hours for penetrating sealers to cure and at least 48 hours of drying time for most topical sealers. Always check the instructions for the sealing product you’re using to determine the drying time.

Most standard concrete patios are around 4 inches deep. However, concrete patios that need to support very heavy items, like a hot tub or outdoor kitchen, should be around 6 inches thick to support the full weight of these items. You'll also want to make sure you install rebar for patios that need to support a lot of weight like this.

To remove solvent-based sealer, you can pressure wash the surface and wait for the concrete to dry. You may need a special remover product if you have a water-based concrete sealer. Another option is to etch and neutralize the concrete. 

If your concrete stains are green in color, it indicates the presence of mold or algae—which you should address right away. If left unattended, mold will spread to other areas throughout the home. However, be careful not to disturb mold on indoor concrete surfaces and work with a local mold remediation specialist for specialized care. Once free from mold and algae, seal your concrete to eliminate pores and gaps.

In most cases, you will need a building permit for cement work on your property. You need a permit for any project that adds a permanent foundation on your property—which, in most cases, includes even a flat slab of concrete poured directly on the ground. Building permits for concrete projects usually cost between $100 and $500, although this can get higher for larger projects. You can always ask your cement company if a permit is necessary for your project, and the expert will typically pull the permit for you to save you time and energy.

The La Harpe, IL homeowners’ guide to decorative concrete services

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

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