We've updated your selection

    Ghostshield   1-gal. Invisible Penetrating Concrete Sealer Plus Densifier and Hardener

    Set your store for local inventory & pick up options.
    • Description

      Lithi-Tek 4500 is an advanced, high performance, industrial strength, deep penetrating concrete sealer and densifier designed to strengthen concrete. This unique formula incorporates leading molecular Nano Technology. The subsequent chemical reaction elicited from the formula fills the pores and capillaries with an impenetrable crystallization. Lithi-Tek 4500 is a uniquely transparent formula containing a proprietary blend of enzymes and surfactants that aide in accelerating a deeper penetrating disbursement. Thus eliciting a more effective, uniformed chemical reaction between the formula and the concrete or masonry substrate it’s being applied to. Lithi-Tek 4500 treats and seals from the inside out; strengthening the concrete as well as providing a seal that will not chip, flake and delaminate or breakdown with UV light exposure.

      • Increase abrasion resistance and strengthens concrete up to 0.50, prevention from ASR, UV resistant
      • Reduction of dirt pick-up, reduces risk of efflorescence, protection against micro-organism growth
      • Effective penetration depth, seals pores and capillaries while remaining breathable, no change in appearance of the substrate; the treated surface does not become glossy
      • Tack free, durable finish, no formation of harmful by-products, no VOC’s
      • Supplied concentrated, makes 2-gal., easy to apply, 100-year warranty
      • Online Price includes Paint Care fee in the following states: CA, CO, CT, ME, MN, OR, RI, VT
      Info & Guides
    • Specifications
      Coating Product Category :
      Color/Finish :
      Clear, Natural
      Coverage Area (sq. ft.) :
      Dry to the touch (hours) :
      Interior/Exterior :
      Maximum hydrostatic pressure (lb.) :
      Number of coats recommended :
      Paint/Stain Key Features :
      Dries Clear,Mildew Resistant,UV/Fade Resistant
      Paint/Stain/Waterproofer Product Type :
      Masonry, Stucco & Brick
      Product Size (oz.) :
      Returnable :
      Time before recoating (hours) :
      Transparency :
      Clear-Crystal Clear
    • Reviews

      Ratings & Reviews

      50% of customers recommend this product
      Out of 5:
      Customer Images (1)
      • Use with 9500
      • October 08, 2015
      • Recommended Product

      I wanted to get the absolute best results so I contacted Ghostshield and told them my situation. They recommended 4500 followed by the 8500 for my badly worn 98 year old concrete. I had already purchased the 9500 and had it laying around and they said it would work as a substitute for the 8500. After cleaning, acid etching, and neutralizing and letting the concrete dry I applied the 4500. Apply it thinly or it may show white residue. The residue can be scrubbed off. I let the 4500 cure for 7 days then I applied the 9500--2 coats. I had significant efflorescence, dusting, etc prior to sealing with this two coat process. I can tell you the efflorescence has been reduced significantly and water beads right off. Hope this helps someone trying to find their way in the crowded world of concrete sealers.

      Video & Photo


      4 out of 4 people found this helpful
      more details...
      By: PapaB
    • Shipping & Delivery Options

      Shipping options for [zipcode] (change)

      Arrival dates and shipping costs shown above are estimates.See exact dates and costs and select your preferred shipping option during checkout.


      Express Delivery from Store is available for items currently in stock at a The Home Depot store within a delivery ZIP code. A driver from a local store will deliver the item(s).

      Outside Delivery:  Service includes delivery to area outside the house which is accessible by delivery equipment.

      Threshold Delivery: Service includes delivery across your first doorway or threshold (ie. garage, backyard, deck, first room of the home).

    This item cannot be shipped to the following state(s): AK,GU,HI,PR,VI

    Find More Concrete Waterproofers & Foundation Coatings TAP TO FILTER